>Hi
>
>I have a numeric field n(11)
>
>I need to show and get input like
>99-99999999-9
>
>What are the setting for inputmask and format?

It needs to be stored as a string (C(11)) with an inputmask '@R 99-99999999-9', and then validated against entry of legal numeric characters such as space, +, . and - before saving.

Unless you do math with it, don't even convert it to a numeric.