Bug description: Ti.UI.Animation.zIndex doesn't work. It throws an exception.
Create parent view with zIndex = 1000
Create label with zIndex 2000
Create Animation object
Set Animation zIndex to 100 and delay to 3 seconds
Call animate on label
Expected behavior: Label should become red after 3 seconds.
Actual behavior: It throws exception: "Uncaught ReferenceError: zIndex is not defined".
Note: Test project is in attachment.