At 12.59 19/08/2002 +0200, you wrote:

>Marco,
>
>Timestamp - Timestamp returns a number (i.e. duration), not another
>timestamp. So there is no way you can do
>
>DELTA_TIME = DELTA_TIME - :P_DELTA;
>
>You have to do something like
>
><VariableDefinedAsANumber> = DELTA_TIME - :P_DELTA;

So after this
I have to do
DELTA_TIME = CAST( <VariableDefinedAsANumber> AS TIMESTAMP );
right?
Regards
Marco

>HTH,
>Set
>
>
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Best Regards,
Marco Lauria
STARMAX s.a.s.
TEL. +39-091-6880476
FAX. +39-091-6887202
MOB. +39-348-3547034

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