is it possible to add a button in the combo suggest list popup?

I want to show an ‘Add New’ button once after the combo suggest popup is loaded. Please find the below snippet, which is not working. Please help me
http://webix.com/snippet/98c848a8

Unfortunately it will not work in such way. Popup view can contain only one sub-view, so you can’t just add an extra control to the popup.

Still there is a way to achieve the desired functionality

check http://webix.com/snippet/368029f2