Working with global objects

All expressions start with a global object. Only an attribute or method of the global object can appear in an expression with nothing to the left of it.

The default global object for any expression is the layer on which the expression is written. For example, if you add an expression to the Scale property of a layer named "Layer A" and you want the expression to return Layer A's Position property's values, you can use any of the following expressions, as they are equivalent:

thisComp.layer("Layer A").position
thisLayer.position
position

To retrieve values from an object other than the layer containing the expression, insert the object in the expression. For example, if you write an expression on a layer named "Layer A" and you want to retrieve position values from a layer named "Layer B", use the following expression:

thisComp.layer("Layer B").position