How to get IBA values from a soft typed object

LWCNormalizedObject obj = new LWCNormalizedObject(my_persistable,null,null,null);
obj.load("name","number");
Object nameValue = obj.get("name");
Object numberValue = obj.get("number");
<%@taglib uri="http://www.ptc.com/infoengine/taglib/core" prefix="ie"%>

<ie:webject name="Query-Objects" type="OBJ">
  <ie:param name="instance" data="${@FORM[]supporting-adapter[*]}" valueseparator=";" delim=";"/>
  <ie:param name="type" data="${@FORM[]type[]}"/>
  <ie:param name="where" data="${@FORM[]where[]}" delim="," default="()"/>
  <ie:param name="container_ref" data="${@FORM[]container_ref[]}"/>
  <ie:param name="attribute" data="${@FORM[]attribute[*]}" delim=","/>
  <ie:param name="group_out" data="${@FORM[]group_out[]}" default="group_out"/>
</ie:webject>