1 Reply Latest reply on Dec 20, 2016 10:10 AM by Mylenium

    Use Expression for Rectangular Mask Size


      I am playing a round with music by animating different layers by the use of an expression .

      thisComp.layer("Audio Amplitude").effect("Both Channels")("Slider")


      I would like to use a Rectangular mask to hide/reveal a layer in a kind of  "horizontal music spectrum visualization".

      Hence part of the layer will be hidden according to the beats.

      I have used the expression in various other properties like opacity, but is it possible to do this for a rectangular mask for its width or length.

      Thanks in advance.