Randomise feedback message

Win 10
psychopy 2023.2.3
Standard Standalone? (y/n) Idk what this means

What are you trying to achieve?:
I am trying to have a varying motivating message like “good job” or “keep going!” in an empathy test. I’ve worked out everything else except the feedback section.
Ideally, after a trial, if they get a correct answer they will get a postive message like " good job !" BUT also no responses (blanks) in between corect responses [ so they dont get annoyed by positive message]
If they get a wrong answer, it will be empty.

What did you try to make it work?:
I’ve tried the following
if mouse.clicked_name[0]==corrAns:
msg= ‘good job’ or ‘’ or “well done”
else:
msg=‘’
the code runs fine but the when correct, it only repeatedly shows “good job”.

What specifically went wrong when you tried that?:
the whole experiment runs fine, but i don’t know how to vary the feedback message.
(alternatively, i could provide positive feedback regardless of right or wrong answers BUT still i would like to have blank responses / no text in between trials so subjects dont get positive messages every single trial)