[Jorge Froberg]

This helped me in the right direction, but wasn’t the solution for me in CC2015.
What worked for me is right click on the actual Composition panel tab label and click View Options.

[Jorge Froberg]

This should work. Put this expression on the Stroke Width value.
What it does is it will tell AE to only use the slider value between 2 and 3 seconds. Outside of that range it will use your normal keyframes.
Hope it helps.

if (time >= 1 && time <= 3) {
effect("Slider Control")("Slider");
} else {
content("Rectangle 1").content("Stroke 1").strokeWidth;
}

[Jorge Froberg]

This is probably a very late reply for you, but I don’t think this is possible. I’ve been looking in to this today as well, but the issue here is that your script sort of pauses when AE is rendering. So even if there was a way of getting that value, there would be no way to retrieve the information and do something with this in real time.

I hope I’m wrong on this one and you somehow already figured out how to do this. If that’s the case, please share!

[Jorge Froberg]

Oh boy, so simple. This worked, thanks Dan !

[Jorge Froberg]

Thanks Dan, this worked!