Creates a New Group within a pre-processing script

psNewGroup.jsx

function psNewGroup(groupName,vis,lock,showHide){
    //"HdAl" - Hides; "RvlA" - Reveal All; "RvlS" - Reveal Selection     
    var doc = activeDocument;
    doc.layerSets.add().name = groupName; //variable must be string
    
    if(!showHide)  {showHide=null} else {psNewMask(showHide,null);}    
    if(vis==false) {doc.layerSets.getByName(groupName).visible = vis} else {lock=null;}
    if(!lock)      {lock=null} else {doc.layerSets.getByName(groupName).allLocked = lock;}    
}