Movie Stimulus Frame Start

If this template helps then use it. If not then just delete and start from scratch.

OS (e.g. Win10): Win10
PsychoPy version (e.g. 1.84.x): 2021.1.2
Standard Standalone? (y/n) If not then what?: y
What are you trying to achieve?:
I am trying to make a 2 minute video start at different times, so it might start 300 frames in or 400 frames in. This is to then be repeated 5 times for two different videos.

What did you try to make it work?:

I tried creating a conditions file that had the cue_file as video/office.mp4 and then a frame_start and frame_finish column with random numbers in there. I then tried putting that into the start and stop sections of the movie stim with $frame_start and $frame_finish respectively.
What specifically went wrong when you tried that?:
The experiment didn’t start and this is the error code I received.

File “C:\Users\James\OneDrive\Documents\Experiment\third”, line 388
if cue.status == NOT_STARTED and frameN >= asarray($frame_start):

I would be grateful if anyone has any ideas.