void AddAt(int index, PrimitiveObjectXXXX newItem);
 PropertyDescription 
  Method Name AddAt  
  Argument - index The position at which the item should be added, 0 for the beginning of the collection, using the value returned from GetCount() will add to the end.  
   Argument - newItem The class item to add to the collection (see Collection Types for the type of object that the collection holds).  
  Description Adds a object to the collection in a specific location  
  RemarksCauses the OnCollectionChange to be fired, after the class is added.