I want to use the mouse to trigger the green button. Participants should continue clicking on the glass until the glass is filled as much as they want to (as in your file) and then click on the green...

Thanks for the answer. That's a possible solution to get rid of the flash (only being able to make the glass fuller is ok). But for some reason I always have to click until the glass is completely...

Hi,

I want to make something like a visual analog scale. Participants should rate stimuli by clicking on a glass which then is filled up to the point where they clicked (no "filling animation",...