[Christopher Hesse]

So now, I’m stumped again. I’m working with the same project and wanted to adapt your expression to flip a CC composite effect from 0 % opacity to 100 %.There’s also an if clause that checks the layer’s y-position to see, if it’s been moved from a fixed position. If that is true, CC composite’s opacity is also turned on.

I get an error message that “startTime” is not defined and might lie outside of the array’s valid space. But I think, that’s not all that is wrong here.

Here’s the code:

startTime = thisLayer.inPoint;

truePos = thisComp.layer(“CONTROL_politicalParties”).transform.position[1];

tag = “full”;

t = 999999;

for (i = 1; i <= thisComp.numLayers; i++){

s = thisComp.layer(i).marker;

if (s.numKeys > 0){

n = s.nearestKey(time).index;

if (time < s.key(n).time) n–;

for (j = n; j > 0; j–){

if (s.key(j).comment == tag){

t = Math.min(t,time – s.key(j).time);

break;

}

}

}

}

if (t < startTime) {

if (truePos == 757) {

0;

}else{

100;

}

}

[Christopher Hesse]

Wow, it works! Thanks so much, Dan :).

Can you break it down for me? I’d like to know how exactly it works out. If you have the time, that is.

[Christopher Hesse]

I feel like I need to elaborate a little more, so I’ve snapped a screenshot that hopefully clarifies my problem.

[Christopher Hesse]

Hi Dan,

thank you very much for your reply! This would let the expression check every preComp layer for markers? Not just on a specific one?