Check text area content of a child window

[WaterStrider]

Thank you. I am trying the following based off your advice:

===
RECT r
int w=win("WaterStrider - Conversation" "QWidget")
scan "image:h74A4C021" child("qt_scrollarea_viewport" "QWidget" w) r 1|2|16
if(scan("image:h74A4C021" w r))
out "x=%i y=%i width=%i height=%i" r.left r.top r.right-r.left r.bottom-r.top
else out "not found"
===

But I am getting an error on line 3