I have some troubles with a simple counting up expression.
I have a ' 0 ' as text layer and I want it to count it up to 21. I do what I always do. Put a slider on it and parent the source text with the slider.
So far so good. But when I want to change the expression from the source text (because otherwise the numbers will go nuts) it give me an error.
This is the expression I put on the source text: math.round(effect("slider Control")("Slider"))
I have the feeling there is a really simple solution for this, but I just cant find it. Someone can help me out here? ^^