$var = _findImageOnScreen("exs/1.bmp", "0,0,0,0", 0)
in this line, is it possible to put variables instead of fixed values of "0,0,0,0"
to have something like below. the way i tried it, it didn't work
$var = _findImageOnScreen("exs/1.bmp", "$X,$Y,$X1,Y1", 0)
btw, what does the last null in the brackets mean?