How to validate settings in vfc

Hi All,

          I want to validate a setting of type string.How can I achieve this. The below is my setting array.

settingArray[0] =

  new Setting( MENU_ID,

   MENU_ID,

  MENU_ID,

  Setting.REQUIRED,

  Setting.SINGLE,

  Setting.SUBSTITUTION_ALLOWED,

  Setting.STRING);

Here is the setting name is Menu_id which of type string, I want to validate the length of this setting, if I enter menu id as 12345, it should allow only first 3 digits. Is this possible in vfc. Thanks in advance

Are you receiving an error?

No I didn't get any errors, but this setting allow me to enter any length of digit,but it should accept only 3 number digit only.

There are Setting Constructor for integer range, but String length range Setting Constructor is currently not available.

Thanks Gourav, I'll look into that constructior