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Global variables
Hello to all. I’m new in the expressions world and I don’t know speak english very well, so… sorry in advnace.
I need to know how to declare global variables in a composition, so I needn’t declare this variables in each layers again.
I send a example code. I want to call this variables (opacidad1, opacidad2,opacidad3, opacidad4, opacidad5) from any layer without declare them again.
Is this posible?
Thanks
opacidad1=transform.opacity;
opacidad2=thisComp.layer("PASTILLA 2").transform.opacity;
opacidad3=thisComp.layer("PASTILLA 3").transform.opacity;
opacidad4=thisComp.layer("PASTILLA 4").transform.opacity;
opacidad5=thisComp.layer("PASTILLA 5").transform.opacity;if((opacidad1==100) && (opacidad2==100)&& (opacidad3==100)&& (opacidad4==100)&& (opacidad5==100)){
temp=100;
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4 Replies
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Expressions can’t change anything except the value of the property to which they are applied. So there aren’t any global variables. You can set up read-only “variables” by applying expressions to slider controls and having all your other expressions reference those, but that doesn’t save you much compared to declaring them as you have done in your example.
Dan
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Thanks for your answer.
So there is no way to keep any value in one variable separately. For example… I want to have a variable wich contains the opacity value of de LAYER 1. I’m going to use this variable in my other 100 layers.
So, Have I to declare this variable in each 100 layers?
Sorry for lower Knowledge about expressions…
Thank you very much
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Well, to expand on what Dan said, you can make a slider and then pick-whip your variable to that slider.
This’ll result in a longer piece of text in the expression, which you’ll still need to put in all of the expressions, but it means if you later decide, “Oh, I want to see what happens if this is 5 instead of 4,” you only need to change the slider.
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Thanks for your help
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