Accessible object trigger to waitfor routine

[ssimop]

This is the keyboard trigger to monitor clicking on one of the two PUSHBUTTONs (Save/Cancel) on Google Chrome's print (Ctrl-P)screen. I am afraid that it is not possible to locate these buttons using Acc techniques. The trigger works properly. My question is whether and how I could convert this trigger to a waitfor routine. Any advice will be appreciated.

Function tempf01
Trigger $a 133 -4 "" "Chrome_RenderWidgetHostHWND" "" "Chrome Legacy Window" "Chrome_WidgetWin_1" "" 43     

Code:

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;\
function hwnd idObject idChild
Acc a.FromEvent(hwnd idObject idChild)
_s=a.Name

mes _s "Clicked"