Yes, easily done if you have the source application configured correctly. It's all in the manual and the AE online help.
bogiesan
This is a discussion on Importing illustrator paths as masks? - Adobe After Effects ; Can after effects convert illustrator vectors or Photoshop paths into masks in an AE layer?...
Can after effects convert illustrator vectors or Photoshop paths into masks in an AE layer?
Yes, easily done if you have the source application configured correctly. It's all in the manual and the AE online help.
bogiesan