If you are having trouble using Copy/Paste shortcuts in a request dialog, make sure that you have an Edit menu. If there is no Edit menu then the Copy and Paste shortcuts will not work in a Request dialog.

This can happen, for example, when there is no menu bar assigned which can be common for a process that runs without a dialog.

A quick and easy way to regain the functionality of Copy/Paste within a Request dialog is to assign a menu bar, like this:

SET MENU BAR(1) $value:=Request("try to copy/paste")

With the menu bar active, the CTRL+C and CTRL+V shortcuts (CMD on mac) will be allowed.