Target items of Folder in After Effects via Script

[Nico_dre]

Hello Adobe Community!

I wrote a Script that targets a Folder via the Folder's name. Now I want to get the solids, which are stored in the folder, and copy/send them to a Composition with the var newComp.

Further more I want to assign every one of these solids a Luma mask and send them to the bottom of the Comp.

An image of the structure in my Project and a code snippet is attached and I thank everyone who wants to help me !

Have a nice day

Nico

alphaMask.onClick = function(){

 // Find Folder
var compFolder = null;
for (var i = 1; i <= app.project.numItems; i++){
if ((app.project.item(i) instanceof FolderItem) && (app.project.item(i).name == "Color")){
compFolder = app.project.item(i);
break;
}
}

if (compFolder == null) return;


if (compFolder != null){
alert(compFolder.length);
}

}

My structure