Answered

After Effects script that Separates Dimensions and adds Expression to each

Forum|Forum|6 months ago
December 16, 2025
1 reply
207 views

Hi,

I would like to create a script for a UI Script panel with two separate buttons: one for X Position and one for Y Position.

The script should first separate the dimensions of the selected layer. Then, each button will apply the following expressions:

PosX button: [thisComp.width] * 1/2

PosY button: [thisComp.height] * 1/2

Correct answer Dan Ebberts

Ignoring your UI buttons for now, this example will set separate dimensions and add the expressions:

var layers = app.project.activeItem.selectedLayers;
if (layers.length > 0){
	var myLayer = layers[0];
	myLayer.property("Position").dimensionsSeparated = true;
	myLayer.property("Transform").property("X Position").expression = "thisComp.width/2";
	myLayer.property("Transform").property("Y Position").expression = "thisComp.height/2";
}else{
	alert("No layer selected.");
}

R

RobinKeussenAuthor

I am having issues with the seperate dimesions function and how to get it tow work. Any help would be apricated.

Dan Ebberts

Correct answer

Community Expert

Ignoring your UI buttons for now, this example will set separate dimensions and add the expressions:

var layers = app.project.activeItem.selectedLayers;
if (layers.length > 0){
	var myLayer = layers[0];
	myLayer.property("Position").dimensionsSeparated = true;
	myLayer.property("Transform").property("X Position").expression = "thisComp.width/2";
	myLayer.property("Transform").property("Y Position").expression = "thisComp.height/2";
}else{
	alert("No layer selected.");
}

R

RobinKeussenAuthor

Thank you Dan - this now works and i have been able to get the script to work.

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded