GetLibraryObject(aliasname) doesn't work fine

Question

Hello
I'm trying to make an IFS Search with two result classes. It works fine, but when I try to get the library object from de SearchResultObject by its alias it returns a null object.
Trying to get it with getLibraryObject() it gives me a proper object (the first one of the result) but I need to acces the second object aswell.
please, does anybody know what happenned?
Raul
EXAMPLE:
String alias1 = sea.addSearchClass("COB_NODO");
String alias2 = sea.addSearchClass("COB_TIPOPRODUCTO");
sea.addResultClass(alias1);
sea.addResultClass(alias2);
sea.addJoinCondition(alias1,"IDPRODUCTO" , alias2, null);
Search search = sea.createSearch();
search.open();
for (int j=0; j<search.getItemCount(); j++)
ArrayList registro = new ArrayList();
SearchResultObject resul = search.next();
PublicObject nodo = (PublicObject) resul.getLibraryObject(alias1);
if (nodo == null) out.println("<BR><b> ... IS NULL, IT IS WRONG!!!</b>");
}

Answer 1

I'm sorry but it doesn't work.
It doesn't matter if I get resultClassNames or aliasesNames. they are always uppercase even when I introduce them manually lowerCase. If I introduce the alias uppercase, wich shouldn't work bad, and I try to getResultClassNames(), it gives me the same alias I introduced but that doesn't work.
It gives me a null class when there should be a not null one.
another way of doing it? or just explain better something that we've missed.
Thank youj