ckeditor - get last cursor position and append html at that Angular 5

1. i am using "ngx-ckeditor": "^0.4.0" in angular 5.

2. here is my html code

   <ck-editor #ckeditor name="html_template" (click)="getCaretPos(ckeditor)" (change)="ckEditorChange(ckeditor)" [(ngModel)]="mailModel.html_template" [config]="ckEditorConfig">
   </ck-editor>
   
   

3. here is my component code

   this.ckEditorConfig = {
       on: {
           instanceReady: function(e) {
               const pos = e.document.selection.getFirstPosition();
               var selection = e.editor.getSelection();
               var range = selection.getRanges()[0];
               var cursor_position = range.startOffset;
             }
       }
   };
   
   

with this code i am not able to get Cursor's last position & don't know how to append html in it?

from ckeditor - get last cursor position and append html at that Angular 5