Clear textbox value

Hi Webix team,

https://snippet.webix.com/0gcj1yfo in this snippet -

  1. Open popup
  2. search list item with entering text into textbox
  3. cancel popup
  4. again open popup at that time I want to clear text box.
    How to do that?

use popup’s onBeforeShow event and clear text’s value and list’s filter

is there any method to clear text box?
Because in webix textbox api there is no such method.

setValue("")