Scripting: One layer to adjust opacity of other layers?

Hi there,
i've a lot of layers in my comp which names start with "POINTER_".
I would need those layers to fade out at the same time.
But i can't subcomp them or use stencil alpha.
I'm sure it is possible to do a script on an adjustment layer that would do just that.
All it needs to do is enable me to do opacity keyframes on that adjustment layer which are then linked to the opacity to all layers starting with "POINTER_".
I'm not a scripting guy so it would be awesome if somebody could show me how to do that.
Thanks a lot!
cheers,
Chris

You don't need a script for it; you need an expression.
You can very easily link properties between layers with expressions. In this case, you would apply an Expression Effect Slider to your null layer (or just use the opacity property of an adjustment layer). Then alt-click the opacity property for one of your layers and use the pick whip to choose the slider effect or the opacity property of your controlling layer. Now, when you change the value of the one layer, the others follow. You can copy and paste the expression that resulted from your pick whip to the other layers. (You can even choose to copy the expression only and then paste that to the rest of the layers.)

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Scripting: One layer to adjust opacity of other layers?

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