Grating drifting in Builder

I am now analysising the visual function of rats. The stimuli should be a drifting grating with a specific spatial frequency. The grating drifts in one direction and then after a specific duration drifts in the reverse direction, in order to eliminate the effect of drifting direction on the visual function of rats.

I would like to know, if it is possible to set the speed or so to speak time frequency in the Builder mode.

Thanks!!

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?:

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What specifically went wrong when you tried that?:
Include pasted full error message if possible. “That didn’t work” is not enough information.