Creating expressionsAll of your work adding, editing, and writing expressions occurs in the Timeline window. When you add an expression to a layer property, a default expression appears in a text field under the property. Use this field to type new expressions or edit expression variables. Some expressions rely on the names of layers in your project; if you change the name of a layer that is involved in an expression, the expression will not work. To create an expression:
Note: After Effects automatically fills the expression field with a default expression that copies the fixed value of the property, or the value of the keyframes, if any. Note: If an expression cannot be processed, After Effects displays a message explaining the error and automatically disables the expression. A yellow warning icon ( ![]() A. On/Off switch B. Graph overlay icon C. Pick whip D. Language elements menu E. Expression field Related Subtopics: |