Frozen Random Number - After Effects Expression

Frozen Random Number

seedRandom(index,true);
myValue = random(50) ;

More expressions you might like...

Ignore Parent Scale

Maintain scale of a layer when parented to another layer. Apply to scale property of child layer.

Delay Keyframes With Slider ValueAtTime()

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 Property with Checkbox

Apply this expression to the property you want to control (like opacity) and make sure it is referencing the correct control layer.

Credit