My brain isn't functioning correctly tonight so I apologise up-front for asking this question <s>.

Is there a simple way of forcing a 'minus' sign (at the start/begining of a number string) for numeric data entry where we know that the value is and must be negative (eg., entering a credit balance).

I have looked at the various format/picture clauses but I couldn't see anything that would automatically make a number negative and display the negative sign as you start typing.

Whilst I can think of a few ways of doing this (in the keypress event), I just wondered whether there is a simple way that I may have overlooked.

Thanks!