Window filter wont work on child windows

[erdemyy]

Greetings , i own 2 another macro software but im interested in quick macros , hoping it will do some thing others couldnt,
Basically, i want f2 key to close tab in firefox and this trigger will only work in firefox.
Quick search revealed that there are window filters i can use , which did work to some extent.

Code:

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function# iid FILTER&f
if(wintest(f.hwnd "" "MozillaWindowClass")) ret iid ;;change window name and class
ret -2

However , when im watching videos in youtube or in some other video site, once the embedded video box is in focus, macro will not work.
Status bar of "quick macros" shows that , video box still has the "MozillaWindowClass".

This is the same problem which i encountered in other software as well , i trust i will find a solution here. Thanks in advance.