feedback "if statement" after custom form_base with image buttons
my trials consist of a form_base with image buttons. After each trial I would like participants to see a green circle if they chose the correct image button and a red one if they don't. The if [correct] = 1 statement doesn't seem to work in this case. I am not sure what kind of info should my correct_answer column contain in this case or what kind of if statement should I write in the sequence.
if [response] = image id or ?
Example of a widget:
widget 2 0 1 1 image_button adjust=no frame=yes image_id=right path="[picture_right].png" var=response