He is correct. The image did not load. However, I assume you are on the sort dialogue screen (or something similar). You should be able to capture the checkbox as a window element. Then there is a “get element attribute”. I would try Own Text first. My guess is it will come back as true or false. If that doesn’t work, try the other options.
once you have that, then you can say:
If %owntext% = false
Select check box %UIelement%
endif
good luck!