Using thisLayer To Ref Parameter In Another Comp

[lightinpro]

I'm trying to so something fairly basic but am coming across a repeated issue. I'd like to refer scaling in another Comp, but not choose a specific layer name. Instead I'd like to use the same layer number where I'm calling it from. The error is the same each time "BAD ARGUMENT. LAYER INDEX OUT OF RANGE EXPRESSION DISABLED" I really thought the 3rd option below would have worked. How can I modify this in order to make it run sucessfuly?

ReadScale=comp("MyComp").layer(4).transform.scale[0]   //**Works well

ReadScale=comp("MyComp").layer("RefLayer").transform.scale[0]  //**Works well

ReadScale=comp("MyComp").layer(thisLayer.index).transform.scale[0]   //**Does not work

ReadScale=comp("MyComp").layer(x).transform.scale[0] //**Does not work (where "x=5")

It seems as though no variable can be inserted into this location. I am able to use the following in another expression for a different parameter. But when I put it all together it still does not work.

parseInt((thisLayer.index)-2  //**Works correctly

Any feedback or food for thought would be greatly appreciated!

-Thanks!

[Dan Ebberts]

ReadScale=comp("MyComp").layer(thisLayer.index).transform.scale[0]

should work fine if you actually have a layer in MyComp with the same index as the one with the expression.

Dan

[lightinpro]

Thank you so much for the quick reply!

I agree that should work but I’m still receiving an error. “Bad Argument: layer index out of range Expression disabled.” I’m glad you’re thinking it should work too, but AE is just telling me no. Is there any reason why this would cause an error?  Your code (copy and paste) did work if I replaced "thisLayer.index" with a numeric value. So I’m thinking the rest of my coding is good? Feel like I’m missing something else.. Any thoughts?

[lightinpro]

Oh man... I just found the issue.  It was pointing to a comp that didn't have enough layers so it was trying to ref a layer that didn't exist. Thank you so much!

[Dan Ebberts]

How many layers does MyComp have? What's the layer index of the layer with the expression?