Use a script to apply an expression to a selected property

[Dan Ebberts]

This would be the basics:

var myComp = app.project.activeItem;
var myProps = myComp.selectedProperties;
var myExpr = "value";
for (var i = 0; i < myProps.length; i++){
	if (myProps[i].canSetExpression) myProps[i].expression = myExpr;
}

[Kevin Snyder]

Thanks, Dan. I appreciate it. For some reason, it’s still throwing an error.

When I use the script below I get a message stating “Unable to execute script at line 5. Expected: ;”

var myComp = app.project.activeItem;
var myProps = myComp.selectedProperties;
var myExpr = "thisComp.layer("Master Null").effect("Drive")("Output 01")";
for (var i = 0; i < myProps.length; i++){
	if (myProps[i].canSetExpression) myProps[i].expression = myExpr;
}

[Dan Ebberts]

In line 3, you’ve got conflicting quotes. Try it this way:

var myExpr = 'thisComp.layer("Master Null").effect("Drive")("Output 01")';

[Kevin Snyder]

Great! Thank you.