Problem getting pl/sql return value

Hi,
I'm using JDeveloper 10.1.2 to generate web service from pl/sql package. But the return value is always zero.
The function is as follows:-
FUNCTION GET_LIMIT ( v1 IN NUMBER, v2 IN NUMBER)
RETURN NUMBER IS
v_result_nr NUMBER;
BEGIN
v_result_nr := v1 * v2;
END;
RETURN v_result_nr;
END GET_LIMIT;
The result on webservices endpoint page:
.. - <ns1:getLimitResponse xmlns:ns1="http://com/test/webservices/LimitCheckWS.wsdl" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<return xsi:type="xsd:decimal" xsi:nil="true" />
</ns1:getLimitResponse>
If i change the "RETURN v_result_nr" to "RETURN '1000.00'" and regenerate the web service, the return value as string is ok. The response is 1000.00 xsd:string.
Any idea why? Thx.

Ok. problem solved. Setup 10g server using loadjava as per document "1.2.4.4 Verifying or Loading the dbwsclient.jar File". Thanks.

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