Empty parameters after using a default package

 Hi,

I'm trying to build a default package for a report but before i declare and use in my data definition, my xml had values for the parameters. After i used, the same parameters are appearing empty...

BEFORE PKG:

Data Definition:
<?xml version="1.0" encoding="windows-1250"?>
<dataTemplate name="XXAPFTR" description="Factura AP" Version="1.0">
<parameters>
<parameter name="P_CHOICE" dataType="character" defaultValue="SEL" />
<parameter name="P_OPEN_INVOICE" dataType="character" />
<parameter name="P_CUST_TRX_TYPE_ID" dataType="character" />
<parameter name="P_TRX_NUMBER_LOW" dataType="character" />
<parameter name="P_TRX_NUMBER_HIGH" dataType="character" />
</parameters>
<dataQuery>
...
</dataTemplate>

XML output:
<XXAPFTR>
<P_CHOICE>SEL</P_CHOICE>