Positioning Objects

[IAmChrishonda]

I'm trying to get the objects to move towards her mouth and once there I want the hot dog to disappear instantly or at the least opacity to go down. When I try with the opacity, the opacity goes down while the hot dog is moving towards her mouth. 

[Mylenium]

Not sure what you're asking. Your screenshots don't even show any opacity keyframes or anything else like a mask or matte around the mouth.

Mylenium

[IAmChrishonda]

I'm trying to get the hot dog to travel towards her mouth and once there I want the hot dog to disappear as if it's being eaten. An example is in the link at the 0:37 mark. https://m.youtube.com/watch?v=WEMz7ovIGOs

[Meng Zhiqun · Accepted solution]

You can use this expression in the opacity. You can change the 350, 300 value as I don't know what's the position value when it goes up, so 300, 350 is a rough figure.

var target = thisLayer.transform.position[1];
linear(target, 350, 300, 0, 100);