Hello,

This should be fairly easy but running into problems.. field remains blank.

What I'm trying to is to confirm that the contents (a number) entered into a field is of certain length and if not return a text error message.

Here is what I thought might work...

If (Length(Field_name = 16); ""; "Please confirm the number")

Is there something I may be overlooking and if so, can you point me in the right direction?

TIA.

Jack

Where are you putting this calculation: in the field's validation options?

Is the field of type text or number?

Vaughan,

Using the calculation under the field validation options; the type of field is a number ( as in credit cards).

HTH.

Jack

If it's a number then don't validate it as text, use a numerical range instead in the "within rage" option...

1000000000000000 to

9999999999999999

Note that this won't work if you expect the number to contain leading zeros; FMP will strip off the leading zeros in a number field (because numbers don't have leading zeros). In this case, DO use a text field to store the "number" (it's really a text string) and use the calculation

Length( field ) = 16

You could get fancier and filter out all non-numeric characters in the validation calculation too.

The validation message does not go into the validation calculation itself; it goes into the "display a message" panel at the bottom of the dialog.

Lastly, note that validation occurs when the record is committed, not when the field is exited.

Hi Vaughan!

Thanks for the update; I had just finished up tinkering with the field definition just prior to reading your response and they are equivalent. Everything works as planned =)

Thanks for your assistance.

Jack