Hey Dario,
I’m sure you’re long since done what you needed this for, but for anyone still looking to get this to work, there were some formatting errors in the original code (possibly due to website upgrades, etc.):
{
var myComp = app.project.activeItem;
if (myComp && myComp instanceof CompItem){
var myLayers = myComp.selectedLayers;
if (myLayers.length > 0){
var myLayer = myLayers[0];
var myProperty = myLayer.property(“Position”);
for (var i = myProperty.numKeys; i > 0; i–){
if (i%2 == -0) myProperty.removeKey(i);
}
}else{
alert(“No layer selected”);
}
}else{
alert (“No comp selected”);
}
}