Xailer & OZ Software

I have some modules written in "C" and they take parameters. Please take
the following example and inform how to code it ?
::oEdit2:Value := XAROUTINE( val(::oEdit1:Value) )
#pragma BEGINDUMP
XA_FUNC( XAROUTINE )
{
int result;
result = MyRoutine( iAmount );
hb_reti( result );
}
#pragma ENDDUMP
TIA.
Regards,
David Fung