Mouse Response: Experiment exits on click

Thank you for your help!
I tried to follow Tutorial 1: How to make a Posner in PsychoPy (2020); start at 10:00

I had a mistake, now I fixed it: in Clickable stimuli= target (not target_x from excel), however I get the same error…

if obj.contains(resp):
AttributeError: ‘list’ object has no attribute ‘contains’

I also tried to create a polygon…

However, I can not put “target_x” (title in excel) in pos (of cycle)
NameError: name ‘target_x’ is not defined

fig4 ![figure3|690x320]