How can i put a value into the textbox of a Modal Dialog in webpage

[_To_Denriku (- To Denriku - 董 伝陸（法人サービス事業統括部）)]

Installer(.exe or .msi):

License type(Free, Trial/License code):

Studio/Robot version:

Current behavior:

Screenshot:

[lakshman (Ganta lakshman)]

@_To_Denriku

Welcome to the UIPath Community.

use Element Exists activity and indicate that dialog box and will give boolean value as output.

If it is true then use Type Into activity and pass the value into textbox.

[_To_Denriku (- To Denriku - 董 伝陸（法人サービス事業統括部）)]

I tried it ,but [False] is come back.
Uipatch cann’t catch hold the object of textbox . Element Exists doesn’t work for me.

javascript:
var win = window.showModalDialog(“XXX/aaa.html”);