ok, this is a workaround for anyone who experiences the same bug
import javax.faces.context.FacesContext;
import com.ibm.xsp.extlib.jdbc.model.SqlParameter;
//This class is a workaround for the conversion state bug reported to openntf.org on 2012/08/23
// (see section defects on their site)
public class SqlParameterEx extends SqlParameter{
@Override
public void restoreState(FacesContext context, Object value) {
Object[] state = (Object[]) value;
//Build an object with a dummy value param
Object[] object = new Object[]{state[0], ""};
super.restoreState(context, object);
setValue(state[1]);
}
}