How to call a folder in DNG for API script appending name

// Change Names to include abbreviations
changeName = function(ref){
//API Call to get attributes from the artifact
   RM.Data.getAttributes(ref, [RM.Data.Attributes.NAME, RM.Data.Attributes.ARTIFACT_TYPE, RM.Data.Attributes.IDENTIFIER, 'Level', 'System'], function(result){
      var artType, artID, artName, artName2;
      var level, system;
      if(result.code != RM.OperationResult.OPERATION_OK){
console.log("error: ", result);
  }
  else{
      console.log("worked");
    // Build up data to save here
    var toSave = [];
   
    // For each artifact save the attributes that we will need to use or append
    result.data.forEach(function(item){

for(var prop in item.values){

if (prop == RM.Data.Attributes.NAME){
artName = item.values[prop];
}
if (prop == RM.Data.Attributes.ARTIFACT_TYPE){
artType = item.values[prop];
}
if (prop == RM.Data.Attributes.IDENTIFIER){
artID = item.values[prop];
}
if (prop == 'Level'){
level = item.values[prop];
}
if (prop == 'System'){
system = item.values[prop];
}
}