After Effects script that Separates Dimensions and adds Expression to each

[RobinKeussen]

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

[RobinKeussen]

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

[Dan Ebberts · Accepted solution]

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.");
}

[RobinKeussen]

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