anybody knows why i can't convert expression to keyframes?
Hello, guys. I'm almost dead becuase of this problem.
Im trying to convert this expression(below) to keyframe, but it doesn't enabled. 
Im not sure the AE just doesn't support converting the effect, 'control slider'.
If i cannot solve it, is there any other way to count the number so i can convert to keyframe?
I should make the Lottiefile so i really need to convert it TT
