set layer mode in multiple layers ?

This variation has an array of comp names at the top, the script will only check comps that are in the list..

function setLayerMode(){

	var compNames = ["Comp 1", "Comp 2"];

	var comp = app.project.activeItem;
	if ( ! comp || ! (comp instanceof CompItem)){
		alert ("No comp active.");
		return;
	}
	if (comp.selectedLayers.length == 0){
		alert ("No layer selected");
	}
	var layer = comp.selectedLayers[0];
	for (var i = 1; i <= app.project.numItems; i++){
		if (app.project.item(i) instanceof CompItem){
			var gotOne = false;
			for (var j = 0; j < compNames.length; j++){
				if (app.project.item(i).name == compNames[j]){
					gotOne = true;
					break;
				}
			}
			if (! gotOne) continue;
			for (var j = 1; j <= app.project.item(i).numLayers; j++){
				if ((app.project.item(i).layer(j) instanceof AVLayer) && (app.project.item(i).layer(j).name == layer.name)){
					app.project.item(i).layer(j).blendingMode = BlendingMode.COLOR;
					break;
				}
			}
		}
	}
}
setLayerMode();