Notes/Domino 4 and 5 Forum

I have a big problem.

A customer of me has Domino 5.0.1 or 5.0.2 on IBM iSeries.
And i wrote a java-agent in Domino which gets DB2-data with jdbc from the iseries machine.

i took the java.sql.getobject(XXX) statement to get the data from the field XXX in db2, and wrote it with Qdoc.replaceItemValue(itemName,tmp_) where tmp_=rs1.getObject(ipos) into the field "itemname".

The problem is that the datatype on db2 is a number and the result in the field "itemname" is string ?

Can anyone help me ???
Is it a bug in Notes 5.0.1 or 5.0.2 ???
The necessary ptf on the AS/400 are installed and the jdk 1.1.8 is also installed, is there anything we have forgotten ???

Thanx

M. Weller