Error: Argument should be an array of numbers of length 3

[wakecarter]

Pavlovia: Argument should be an array of numbers of length 3

URL of experiment: https://pavlovia.org/pasoba/fsstep Description of the problem: I want Psychopy to drag a new Polygon colour every trial from my conditionsfile. It worked fine when I had set the Polygon colour to “constant” but since i changed it to “set every repeat” I always get the error “the argument should be an array of numbers of length 3”. In my conditionfile I specified the colour as -0.7,-0.7,-0.7 (rgb colour space) so there should be 3 numbers. I had brackets around the numbers …