Different values computed from the ones that are commited ???

In debug mode I have traced step by step every line and there I have got the values that I need. But when the update of the record has been done, different values has been updated then the ones I have got in the debug mode.

How can I correct that and what did happen with those records ?

Have your program output the actual insert/update query just before issueing it to database and check that one.

Thanks for helping me, but here is a larger explanation.
I have one of many stored procedures in which this has happened.
Three local variables (L_neto,L_bruto,L_minrad) are computed correctly (8222, 11666, 1456) but when I do this in the procedure

update table_name
set neto = :L_neto,
bruto = :L_bruto,
minrad = :L_minrad
where /*condition for update*/

then in the table are updated wrong values (8202, 11637, 1432).

This is the only update or insert part of all procedures for this table. If I omit this update then inital values are set to 0 and everything is OK. I have to do this update 250 times for different input parameters, and this doesn't happen for every 250 records but only for some.

I hope you understood me now, and once again thans for helping me.

What could I do ?