Using an object HAVE as an AE CS5 mask

I have a "brush stroke" object in a file that I want TO use in AE.  My goal is to have the brush stroke animated so that it looks, it is painted on the screen.  I created a shape layer in AE and then copied and pasted the AI object in the layer.  My problem is to get the brush stroke to work as a mask for a solid red.  How can I make this work and then animate the solid red to simulate the effect of a sudden painted brush?

My layers:

Capture.JPG

My "brush stroke" solid red in the composition:

Capture.JPG

Use the layer as a track matte on the solid. to paint on the features, create a central aisle, use effects like stroke to reveal (or even a way of capping layer with a filling of paths modifier). for a stroke to bow as your also a radial wipie might work...

Mylenium

Tags: After Effects

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