Animating mask over specific time

I need to make my mask move up over a period of time.

transition.to would be nice because it does exactly that but it asks for a y value. I have an object.maskY value that is not accepted in the argument. So how do I make my mask move up to a specific spot in exactly 1 second?

Thanks! [import]uid: 22392 topic_id: 6131 reply_id: 306131[/import]

did you check the included samples? [import]uid: 6645 topic_id: 6131 reply_id: 21018[/import]

Yeah it looks like they onlyhave the mask follow a drag.

I need it to transition up independently of a drag. [import]uid: 22392 topic_id: 6131 reply_id: 21058[/import]