>Viv
>
>I am very glad for your help
>
>The code is working now
>
>The best substition "for do until" is "do while .NOT."
>
>This way I don't need to change operator or values
>
>Ex.:
>
>Do until xa > 100
>
>Do while .NOT. xa > 100

True. Simpler. Anyway I'm glad it's working for you now,
Regards,
Viv