(hasParent) ? (parent.opacity/100) * value : value;
β
The parent's opacity value acts as a mulitplier for the child's
Use a slider control to delay keyframe animation by a defined amount of seconds. Works like a marker trigger, but simpler. Useful for MOGRTs
Control the opacity of a layer by the dropdown menu selection. Add a Number [1,2,3,etc] to the beginning of layer to make it work
Apply this expression to the property you want to control (like opacity) and make sure it is referencing the correct control layer.
AfterEffects_Tricks
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