Checking alpha/numeric

[Elsie]

Is there a calculation in Filemaker that will check to see if the data entered is specifically of an alpha or numeric format?

ie. I need to check that a code eg ABC1234 must start with 3 letters followed by 4 numbers.

Thanks in advance for any help.

Elsie

[john.daly]

In the Define Fields dialog make sure your field for the Code is defined as text and then click on the Options button. Check Validation by Claculation and then insert the following:

TextToNum( Left(Code,3)) < 1

Wher Code is yur field name.

You can also include a Custom message and prevent the user form over riding the warning by checking the next two boxes.

Hope this helps.

[Elsie]

Thanks John

It does help.

Elsie.