Two simultaneous stimuli (polygon)

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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?: I am trying to achieve two different coloured polygons which are seen at the same time at the sceen. Furthermore I want to have more repititions in which randomly not only two stimuli at the same time but also one stimuli (polygon which is white or darkgray) is visible.

What did you try to make it work?: Until now I created an Excel file with the column brightness (white and DarkGray) and the second column position (left or right). I connected it to psychopy and until now the experiment shows ramdomly the polygons (sometimes white sometimes dark gray) (N I also included a cue, but this actually deisnt matter). Now the prblem is that additionally to what I git I want another (a third) option wehre two polygons are shown simultanously and which are randomly white or darkgray but they should not have the same color.

What specifically went wrong when you tried that?:
Nothing went wrong I just dont know how to create two simultaneous stimuli at the same time.

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I have the same question. Do you now know how to do it?

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What I do is create two stimuli and multiply their x coordinate by a variable (which can be set in code or in a spreadsheet) which takes the values 1 or -1.

1 gives the standard locations

-1 gives the swapped locations