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 FileMaker Pro Custom Functions

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SeparateStringtypes ( text ; separator )

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  Average rating: 4.4  (33 votes)
  Discuss this Custom Function

Maarten Witberg, maarten witberg kennis van data

inserts Separator between numeric and other characters.

Sample Input:
SeparateStringtypes ( "ABC123Z" ; "-" )
Sample Output:

 Then copy & paste into FileMaker Advanced's Edit Custom Function window.


This function was written to format user-defined product serials that consist of alphanumeric strings. Original question posed here:

The function is recursive. From the rightmost character it compares two adjacent characters and inserts separator where they don't match. Then recurses to the next character by entering the input text minus 1 character.
Please note that any non-numerical character is treated as text, so $&#% are bracketed in with alpha characters.

Note: these functions are not guaranteed or supported by Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it


How I can convert a field containing numeric and alpha to text.
Z45 = Z four five
ML7899+ ML seven eight nine nine
642103 = six zero three two one four
7552.32= seven five five two. trhee two


jose, Los Angeles, California
September 05, 2013 10:44am

Hi Jose,

Well this function was not designed for that purpose. There are to the best of my knowledge various custom functions available here at that can do what you want. For instance . That function is not by me and I have not tested it.

Good luck,


Maarten Witberg, Arnhem NL
September 05, 2013 11:42am

Make a comment about this Custom Function (please try to keep it brief & to the point). Anyone can post:

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Answer 4 + 4 =
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