Issues moving on from first stimuli screen

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

OS (e.g. Win10):
PsychoPy version (e.g. 1.84.x):
Standard Standalone? (y/n) If not then what?:
What are you trying to achieve?:

Trying to build a 2-back task. I’ve left the ‘force end routine’ box unchecked as I want the presentation of each stimulus to be on a timer. For the text stimulus I left the ‘$Letter’ section on constant and I had an error message (posted below) saying I needed to define the ‘Letter’.

What did you try to make it work?:

I then set ‘$Letter’ to ‘set every repeat’ and found that it doesn’t move on from the first stimulus screen. How can I keep the screens on a timer and still have them move onto the next one after a certain time?

What specifically went wrong when you tried that?:

All of your components need to have a specified end time so that the routine will terminate at the desired time. NB, this makes it possible that a person won’t have responded via the keyboard before then send of the routine.