diff --git a/controllets/data-sevc-controllet/data-sevc-controllet.html b/controllets/data-sevc-controllet/data-sevc-controllet.html
index cf2c312..a987fb4 100755
--- a/controllets/data-sevc-controllet/data-sevc-controllet.html
+++ b/controllets/data-sevc-controllet/data-sevc-controllet.html
@@ -123,7 +123,8 @@
             _updateSlider : function(e){
                 switch (e.detail.selected) {
                     case 0:
-                        document.l10n.formatValues('slide1Title', 'slide1Subtitle').then(A => slider.setTitle(A[0], A[1]));
+                       /* document.l10n.formatValues('slide1Title', 'slide1Subtitle').then(A => slider.setTitle(A[0], A[1]));*/
+                        document.l10n.formatValues('slide1Title', 'slide1Subtitle').then(function(A){slider.setTitle(A[0], A[1])});
 //                        slider.setTitle("SELECT DATASET", "Search or copy and paste the url of dataset.");
                         slider.chevronLeft("invisible");
                         slider.chevronRight(false);
@@ -131,7 +132,7 @@
                             slider.chevronRight(true);
                         break;
                     case 1:
-                        document.l10n.formatValues('slide2Title', 'slide2Subtitle').then(A => slider.setTitle(A[0], A[1]));
+                        document.l10n.formatValues('slide2Title', 'slide2Subtitle').then(function(A){slider.setTitle(A[0], A[1])});
 //                        slider.setTitle("SELECT DATA", "Select the fields from tree-view. The multi-table will show the values related to the selected fields.");
                         if(this.modify){
                             slider.chevronLeft("invisible");
@@ -145,7 +146,7 @@
                         this._allowThirdStep({detail: {fields: tree_view_multi_table.getFlatFields()}});
                         break;
                     case 2:
-                        document.l10n.formatValues('slide3Title', 'slide3Subtitle').then(A => slider.setTitle(A[0], A[1]));
+                        document.l10n.formatValues('slide3Title', 'slide3Subtitle').then(function(A){slider.setTitle(A[0], A[1])});
 //                        slider.setTitle("SELECT VISUALIZATION", "Select a visualization, fill out inputs and labels (optional).");
                         slider.chevronLeft(true);
                         slider.chevronRight("invisible");
diff --git a/controllets/datalet-selection-controllet/datalet-selection-controllet.html b/controllets/datalet-selection-controllet/datalet-selection-controllet.html
index d253448..5fa1153 100755
--- a/controllets/datalet-selection-controllet/datalet-selection-controllet.html
+++ b/controllets/datalet-selection-controllet/datalet-selection-controllet.html
@@ -403,8 +403,10 @@
 
             _translate : function(){
 //                document.l10n.formatValue('commentLabel').then(s => $("#comment")[0].setAttribute("label", s));
-                if(this.modify)
-                    document.l10n.formatValue('modifyDatalet').then(s => this.$.add_button.innerText = s);
+                if(this.modify){
+                    var that = this;
+                    document.l10n.formatValue('modifyDatalet').then(function(s){that.$.add_button.innerText = s});
+                }
             },
 
             _selectDatalet : function(e){
@@ -596,6 +598,7 @@
             },
 
             _showInfo : function(e){
+                var that = this;
                 var t = e.target;
                 if(t.tagName.indexOf("IRON-ICON") != -1)
                     t = $(e.target).parents("paper-icon-button")[0];
@@ -608,7 +611,7 @@
 
                 this.$.dialog_name.innerHTML = dataset.name;
 //                this.$.dialog_description.innerHTML = dataset.description;
-                document.l10n.formatValue(dataset.description).then(s => this.$.dialog_description.innerHTML = s);
+                document.l10n.formatValue(dataset.description).then(function(s){that.$.dialog_description.innerHTML = s});
                 this.$.dialog_info_input.open();
 
                 var pos = t.getBoundingClientRect();
diff --git a/controllets/dataset-selection-controllet/dataset-selection-controllet.html b/controllets/dataset-selection-controllet/dataset-selection-controllet.html
index 47387cf..5438680 100755
--- a/controllets/dataset-selection-controllet/dataset-selection-controllet.html
+++ b/controllets/dataset-selection-controllet/dataset-selection-controllet.html
@@ -260,10 +260,11 @@
             },
 
             _translate : function(){
-                document.l10n.formatValue('availableDatasets').then(s => $("#_datasets")[0].setAttribute("label", s));
+                var that = this;
+                document.l10n.formatValue('availableDatasets').then(function(s){$("#_datasets")[0].setAttribute("label", s)});
                 if(this.isSuggested)
-                    document.l10n.formatValue('suggestedDatasets').then(s => $("#s_datasets")[0].setAttribute("label", s));
-                document.l10n.formatValue('selectedUrl').then(s => this.$.selected_url.setAttribute("label", s));
+                    document.l10n.formatValue('suggestedDatasets').then(function(s){$("#s_datasets")[0].setAttribute("label", s)});
+                document.l10n.formatValue('selectedUrl').then(function(s){that.$.selected_url.setAttribute("label", s)});
             },
 
             _filterDatasets : function(e){