diff --git a/apps/common/main/lib/view/OpenDialog.js b/apps/common/main/lib/view/OpenDialog.js
index 6fd52e989..659d4b7df 100644
--- a/apps/common/main/lib/view/OpenDialog.js
+++ b/apps/common/main/lib/view/OpenDialog.js
@@ -104,7 +104,7 @@ define([
                             '</div>',
                         '</div>',
                         '<% } %>',
-                        '<% if (type == Common.Utils.importTextType.CSV || type == Common.Utils.importTextType.Paste || type == Common.Utils.importTextType.Columns) { %>',
+                        '<% if (type == Common.Utils.importTextType.CSV) { %>',
                         '<div style="display: inline-block; margin-bottom:15px;">',
                             '<label class="header">' + t.txtDelimiter + '</label>',
                             '<div>',
@@ -113,6 +113,16 @@ define([
                             '</div>',
                         '</div>',
                         '<% } %>',
+                        '<% if (type == Common.Utils.importTextType.Paste || type == Common.Utils.importTextType.Columns) { %>',
+                        '<div style="display: inline-block; margin-bottom:15px;width: 100%;">',
+                            '<label class="header">' + t.txtDelimiter + '</label>',
+                            '<div>',
+                                '<div id="id-delimiters-combo" class="input-group-nr" style="max-width: 100px;display: inline-block; vertical-align: middle;"></div>',
+                                '<div id="id-delimiter-other" class="input-row" style="display: inline-block; vertical-align: middle;margin-left: 10px;"></div>',
+                                '<button type="button" class="btn btn-text-default" id="id-delimiters-advanced" style="min-width:100px; display: inline-block;float:right;">' + t.txtAdvanced + '</button>',
+                            '</div>',
+                        '</div>',
+                        '<% } %>',
                         '<% if (!!preview) { %>',
                             '<div style="">',
                                 '<label class="header">' + t.txtPreview + '</label>',
@@ -234,7 +244,10 @@ define([
                     if (!this.closable && this.type == Common.Utils.importTextType.TXT) { //save last encoding only for opening txt files
                         Common.localStorage.setItem("de-settings-open-encoding", encoding);
                     }
-                    this.handler.call(this, state, encoding, delimiter, delimiterChar);
+
+                    var decimal = this.separatorOptions ? this.separatorOptions.decimal : undefined,
+                        thousands = this.separatorOptions ? this.separatorOptions.thousands : undefined;
+                    this.handler.call(this, state, encoding, delimiter, delimiterChar, decimal, thousands);
                 }
             }
 
@@ -336,6 +349,13 @@ define([
                 this.inputDelimiter.setVisible(false);
                 if (this.preview)
                     this.inputDelimiter.on ('changing', _.bind(this.updatePreview, this));
+
+                if (this.type == Common.Utils.importTextType.Paste || this.type == Common.Utils.importTextType.Columns) {
+                    this.btnAdvanced = new Common.UI.Button({
+                        el: $('#id-delimiters-advanced')
+                    });
+                    this.btnAdvanced.on('click', _.bind(this.onAdvancedClick, this));
+                }
             }
         },
 
@@ -355,7 +375,12 @@ define([
                     break;
                 case Common.Utils.importTextType.Paste:
                 case Common.Utils.importTextType.Columns:
-                    this.api.asc_TextImport(new Asc.asc_CTextOptions(encoding, delimiter, delimiterChar), _.bind(this.previewCallback, this), this.type == Common.Utils.importTextType.Paste);
+                    var options = new Asc.asc_CTextOptions(encoding, delimiter, delimiterChar);
+                    if (this.separatorOptions) {
+                        options.asc_setNumberDecimalSeparator(this.separatorOptions.decimal);
+                        options.asc_setNumberGroupSeparator(this.separatorOptions.thousands);
+                    }
+                    this.api.asc_TextImport(options, _.bind(this.previewCallback, this), this.type == Common.Utils.importTextType.Paste);
                     break;
             }
         },
@@ -444,6 +469,28 @@ define([
             this.updatePreview();
         },
 
+        onAdvancedClick: function() {
+            if (!SSE) return;
+
+            var me = this,
+                decimal = this.api.asc_getDecimalSeparator(),
+                thousands = this.api.asc_getGroupSeparator();
+            (new SSE.Views.AdvancedSeparatorDialog({
+                props: {
+                    decimal: decimal,
+                    thousands: thousands
+                },
+                handler: function(result, value) {
+                    if (result == 'ok') {
+                        me.separatorOptions = {
+                            decimal: (value.decimal.length > 0) ? value.decimal : decimal,
+                            thousands: (value.thousands.length > 0) ? value.thousands : thousands
+                        };
+                    }
+                }
+            })).show();
+        },
+
         txtDelimiter       : "Delimiter",
         txtEncoding        : "Encoding ",
         txtSpace           : "Space",
@@ -458,7 +505,8 @@ define([
         txtComma: 'Comma',
         txtColon: 'Colon',
         txtSemicolon: 'Semicolon',
-        txtProtected: 'Once you enter the password and open the file, the current password to the file will be reset.'
+        txtProtected: 'Once you enter the password and open the file, the current password to the file will be reset.',
+        txtAdvanced: 'Advanced'
 
     }, Common.Views.OpenDialog || {}));
 });
\ No newline at end of file
diff --git a/apps/spreadsheeteditor/main/app/controller/DataTab.js b/apps/spreadsheeteditor/main/app/controller/DataTab.js
index 6aa5e25db..46486cd48 100644
--- a/apps/spreadsheeteditor/main/app/controller/DataTab.js
+++ b/apps/spreadsheeteditor/main/app/controller/DataTab.js
@@ -199,10 +199,13 @@ define([
                 previewData: data,
                 settings: me._state.CSVOptions,
                 api: me.api,
-                handler: function (result, encoding, delimiter, delimiterChar) {
+                handler: function (result, encoding, delimiter, delimiterChar, decimal, thousands) {
                     if (result == 'ok') {
                         if (me && me.api) {
-                            me.api.asc_TextToColumns(new Asc.asc_CTextOptions(encoding, delimiter, delimiterChar));
+                            var options = new Asc.asc_CTextOptions(encoding, delimiter, delimiterChar);
+                            decimal && options.asc_setNumberDecimalSeparator(decimal);
+                            thousands && options.asc_setNumberGroupSeparator(thousands);
+                            me.api.asc_TextToColumns(options);
                         }
                     }
                 }
diff --git a/apps/spreadsheeteditor/main/app/controller/DocumentHolder.js b/apps/spreadsheeteditor/main/app/controller/DocumentHolder.js
index e35085aae..2553a88e6 100644
--- a/apps/spreadsheeteditor/main/app/controller/DocumentHolder.js
+++ b/apps/spreadsheeteditor/main/app/controller/DocumentHolder.js
@@ -2442,12 +2442,16 @@ define([
                                 type: Common.Utils.importTextType.Paste,
                                 preview: true,
                                 api: me.api,
-                                handler: function (result, encoding, delimiter, delimiterChar) {
+                                handler: function (result, encoding, delimiter, delimiterChar, decimal, thousands) {
                                     if (result == 'ok') {
                                         if (me && me.api) {
                                             var props = new Asc.SpecialPasteProps();
                                             props.asc_setProps(Asc.c_oSpecialPasteProps.useTextImport);
-                                            props.asc_setAdvancedOptions(new Asc.asc_CTextOptions(encoding, delimiter, delimiterChar));
+
+                                            var options = new Asc.asc_CTextOptions(encoding, delimiter, delimiterChar);
+                                            decimal && options.asc_setNumberDecimalSeparator(decimal);
+                                            thousands && options.asc_setNumberGroupSeparator(thousands);
+                                            props.asc_setAdvancedOptions(options);
                                             me.api.asc_SpecialPaste(props);
                                         }
                                         me._state.lastSpecPasteChecked = item;
diff --git a/apps/spreadsheeteditor/main/app/controller/Toolbar.js b/apps/spreadsheeteditor/main/app/controller/Toolbar.js
index 8c277ddfa..856454690 100644
--- a/apps/spreadsheeteditor/main/app/controller/Toolbar.js
+++ b/apps/spreadsheeteditor/main/app/controller/Toolbar.js
@@ -60,7 +60,8 @@ define([
     'spreadsheeteditor/main/app/view/PrintTitlesDialog',
     'spreadsheeteditor/main/app/view/ScaleDialog',
     'spreadsheeteditor/main/app/view/SlicerAddDialog',
-    'spreadsheeteditor/main/app/view/CellsAddDialog'
+    'spreadsheeteditor/main/app/view/CellsAddDialog',
+    'spreadsheeteditor/main/app/view/AdvancedSeparatorDialog'
 ], function () { 'use strict';
 
     SSE.Controllers.Toolbar = Backbone.Controller.extend(_.extend({
diff --git a/apps/spreadsheeteditor/main/app/view/AdvancedSeparatorDialog.js b/apps/spreadsheeteditor/main/app/view/AdvancedSeparatorDialog.js
new file mode 100644
index 000000000..5f2e2bf5e
--- /dev/null
+++ b/apps/spreadsheeteditor/main/app/view/AdvancedSeparatorDialog.js
@@ -0,0 +1,144 @@
+/*
+ *
+ * (c) Copyright Ascensio System SIA 2010-2020
+ *
+ * This program is a free software product. You can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License (AGPL)
+ * version 3 as published by the Free Software Foundation. In accordance with
+ * Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
+ * that Ascensio System SIA expressly excludes the warranty of non-infringement
+ * of any third-party rights.
+ *
+ * This program is distributed WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE. For
+ * details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
+ *
+ * You can contact Ascensio System SIA at 20A-12 Ernesta Birznieka-Upisha
+ * street, Riga, Latvia, EU, LV-1050.
+ *
+ * The  interactive user interfaces in modified source and object code versions
+ * of the Program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU AGPL version 3.
+ *
+ * Pursuant to Section 7(b) of the License you must retain the original Product
+ * logo when distributing the program. Pursuant to Section 7(e) we decline to
+ * grant you any rights under trademark law for use of our trademarks.
+ *
+ * All the Product's GUI elements, including illustrations and icon sets, as
+ * well as technical writing content are licensed under the terms of the
+ * Creative Commons Attribution-ShareAlike 4.0 International. See the License
+ * terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
+ *
+*/
+/**
+ *  AdvancedSeparatorDialog.js
+ *
+ *  Created by Julia Radzhabova on 26/06/20
+ *  Copyright (c) 2020 Ascensio System SIA. All rights reserved.
+ *
+ */
+
+define([
+    'common/main/lib/component/Window',
+    'common/main/lib/component/InputField'
+], function () { 'use strict';
+
+    SSE.Views.AdvancedSeparatorDialog = Common.UI.Window.extend(_.extend({
+        options: {
+            width: 330,
+            cls: 'modal-dlg',
+            buttons: ['ok', 'cancel']
+        },
+
+        initialize : function(options) {
+            _.extend(this.options, {
+                title: this.textTitle
+            }, options || {});
+
+            this.template = [
+                '<div class="box">',
+                '<div class="input-row" style="margin-bottom: 8px;">',
+                    '<label>' + this.textLabel + '</label>',
+                '</div>',
+                '<div style="margin-bottom: 12px;">',
+                    '<div id="id-adv-separator-decimal" class=""></div><label class="input-row" style="margin-left: 10px; padding-top: 4px;">' + this.strDecimalSeparator + '</label>',
+                '</div>',
+                '<div style="margin-bottom: 10px;">',
+                    '<div id="id-adv-separator-thousands" class=""></div><label class="input-row" style="margin-left: 10px; padding-top: 4px;">' + this.strThousandsSeparator + '</label>',
+                '</div>',
+                '</div>'
+            ].join('');
+
+            this.options.tpl = _.template(this.template)(this.options);
+            this.props = options.props;
+
+            Common.UI.Window.prototype.initialize.call(this, this.options);
+        },
+
+        render: function() {
+            Common.UI.Window.prototype.render.call(this);
+
+            this.inputDecimalSeparator = new Common.UI.InputField({
+                el: $('#id-adv-separator-decimal'),
+                style: 'width: 35px;',
+                maxLength: 1,
+                validateOnBlur: false
+            });
+
+            this.inputThousandsSeparator = new Common.UI.InputField({
+                el: $('#id-adv-separator-thousands'),
+                style: 'width: 35px;',
+                maxLength: 1,
+                validateOnBlur: false
+            });
+
+            var $window = this.getChild();
+            $window.find('.btn').on('click',     _.bind(this.onBtnClick, this));
+
+            this.afterRender();
+        },
+
+        afterRender: function() {
+            this._setDefaults(this.props);
+        },
+
+        _setDefaults: function (props) {
+            if (props) {
+                this.inputDecimalSeparator.setValue(props.decimal || '');
+                this.inputThousandsSeparator.setValue(props.thousands || '');
+            }
+        },
+
+        show: function() {
+            Common.UI.Window.prototype.show.apply(this, arguments);
+
+            var me = this;
+            _.delay(function(){
+                me.inputDecimalSeparator.cmpEl.find('input').focus();
+            },50);
+        },
+
+        onPrimary: function(event) {
+            this._handleInput('ok');
+            return false;
+        },
+
+        onBtnClick: function(event) {
+            this._handleInput(event.currentTarget.attributes['result'].value);
+        },
+
+        _handleInput: function(state) {
+            if (this.options.handler) {
+                this.options.handler.call(this, state, {decimal: this.inputDecimalSeparator.getValue(), thousands: this.inputThousandsSeparator.getValue()});
+            }
+
+            this.close();
+        },
+
+        textTitle: 'Advanced Settings',
+        textLabel: 'Settings used to recognize numeric data',
+        strDecimalSeparator: 'Decimal separator',
+        strThousandsSeparator: 'Thousands separator'
+
+    }, SSE.Views.AdvancedSeparatorDialog || {}));
+});
\ No newline at end of file