get the value of a control on the window

[win]

Hello everyone, I am trying a case, I want to get the value of a control on the window, and save the value to the variable(id), I can't think of a solution, I hope someone can help me, thanks in advance

Macro Macro5

Code:

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;Here is a little problem, how to wait for the control to activate, then, get the control value
int w=wait(0 WA win("TeamViewer" "#32770")) 

str id
;;The code that saves the control value to the variable(id)