Using the expression language menuThe expression language menu contains all the After Effects-specific language elements that you can use in an expression. This menu is helpful for determining valid elements and their correct syntax; use it as a reference for available elements. Select any object, attribute, or method, and After Effects automatically inserts it in the expression field at the location of the cursor. Then, edit and add to it as needed. For example, if you want to begin an expression with the comp as the object, select "this_comp" from the Global menu: this_comp To continue the expression, add a period (.) to the end and then choose an attribute from the Comp menu, such as "layer": this_comp.layer( Insert the specific layer information you want, such as: this_comp.layer(1) Next, choose an attribute or method from the Layer, Light, or Camera menu. For example, if layer 1 has Position keyframes, choose "position," and so on. this_comp.layer(1).position To insert expression language elements:
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