Sorry about forgetting the error message! I’ve edited the post to include the full message.
When defining the string variable, I’ve included the .bmp extension, and when I print the stimulus list in the .py file, everything looks good. Here’s how I defined the strings in the .py file:
target = competitors[22]
target = target + ".bmp"
...
My syntax is probably off in the Builder. Thanks for the quick reply!
Steve