I tried Linked Properties on different comps, but it didn't go as i wanted.

[Adryos Prewandha]

So, I created a window design inside a different composition, and I want to create a size control inside the main composition. But I found a problem, when I add a keyframe in the control, the shape of the window inside the composition doesn't change, it just sticks to the value in the first keyframe.

I still don't understand the expression system, so I just rely on the parent system.

[Dan Ebberts]

 Are you using an expression to link the scale inside the precomp to the control in the main comp? If so, please post the expression you're using.

[Dan Ebberts · Accepted solution]

Based on what I can see in your video, if you replace your scale expression with this, you should be good to go:

C = comp("MainComp");
ctrl = C.layer("Control").scale;
L = C.layer(thisComp.name);
ctrl.valueAtTime(time + L.startTime)

[Adryos Prewandha]

ahhh, yeah... it make sense now, i forgot bout valueAtTime... it works now! 

[Dan Ebberts]

It's only an issue if you keyframe a control in the main comp and the start time of the precomp layer in the main comp is not zero.