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Expressions: Change a value of another layer

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Tim Och
Expressions: Change a value of another layer
on Jun 2, 2014 at 9:36:29 pm

Hello,
this might be a really stupid question for you, but i`m just getting started with expressions and after 2 hours of pointless searching for a solution i don`t really know what to do.

I want to manipulate the opacity of several layers from one single null-layer, now to start i tried manipulating the value of a single layer ("layer 1",a plain red layer).

After trying several different functions and methods with:
thisComp.layer("layer 1").transform.opacity
i was stuck and now i need your help. How can i change the Opacity of "layer 1" with a expression from "null 1"

Best Regards
Tim


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Todd Kopriva
Re: Expressions: Change a value of another layer
on Jun 2, 2014 at 11:08:13 pm

Use property links:
http://blogs.adobe.com/aftereffects/2013/09/after-effects-cc-12-1-whats-new...

---------------------------------------------------------------------------------------------------------
Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
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Tim Och
Re: Expressions: Change a value of another layer
on Jun 3, 2014 at 12:28:22 pm

Hi,
thanks for your answer. What you wrote makes sense if i only want to control one layer with another layer, but i want to control 10 layer opacitys from one layer. Is this possible in any way ?

Best Regards
Tim


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Michael Szalapski
Re: Expressions: Change a value of another layer
on Jun 3, 2014 at 1:45:10 pm

You can copy and paste the created expression to as many other layers as you want.

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.


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Todd Kopriva
Re: Expressions: Change a value of another layer
on Jun 3, 2014 at 4:00:36 pm

> want to control 10 layer opacitys from one layer. Is this possible in any way ?


Yes. That's what property links were designed for. Try it.

---------------------------------------------------------------------------------------------------------
Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
---------------------------------------------------------------------------------------------------------


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