Example: Find "function" object and write/assign "ID" attribute

var omodel=ArisData.getSelectedModels();
var gloc=Context.getSelectedLanguage();

function main(){
    for(var i=0;i<omodel.length;i++){
        var objOccList=omodel[i].ObjOccListBySymbol(335);
        var sortedObjOccList=objOccList.sort(sortObjOccByPosition);
        for(var j=0;j<sortedObjOccList.length;j++){
            //provide the id which u want to assign for id attribute 
            //updating the id attribute by 0,1,2.....
            sortedObjOccList[j].ObjDef().Attribute(Constants.AT_ID,gloc).setValue(j);
        }
    }
}
main(); 

function sortObjOccByPosition(a,b){
    if( a.Y() < b.Y() )   return -1;
    if( (a.Y() == b.Y()) && (a.X() < b.X()) ) return 1;
    if( (a.Y() == b.Y()) && (a.X() > b.X()) ) return -1;
    if( a.Y() > b.Y() )   return 1;
    
    return 0;
}

var modelList=ArisData.getSelectedModels();

for(m in modelList)
    DFSindex(modelList[m], Context.getSelectedLanguage())

function DFSindex(model, locale)
{
    var index = 0;
    var used = new java.util.HashSet()
    
    model.BuildGraph(true)
    var startOccList = ArisData.sort( model.StartNodeList(), Constants.SORT_Y, Constants.SORT_X, locale)
    for(i in startOccList)
    {
        var occ = model.DFSGetFirstNode(startOccList[i])
        while(occ!=null && occ.IsValid())
        {
            if(occ.getSymbol()==Constants.ST_FUNC && !used.contains(occ.ObjectID()) )
            {
                occ.ObjDef().Attribute(Constants.AT_ID,locale).setValue("index " + index);
                used.add(occ.ObjectID())
                index++;
            }
            occ = model.DFSNextNode() 
        }
    }
}