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# FileMaker Pro Custom Functions

MaxNumVal ( TheList )

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Discuss this Custom Function

Christian Jäger, Hannover
http://www.hannover.de

Evaluates Maximum Numeric Value of a List of VAlues

Sample Input:
 1¶45.667¶3.5
Sample Output:
 45.667

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

## Description:

Max(1;2;3;6) gets the Max. Pity, FileMaker Inc does not yoet recognizes the "¶" Separator in Functions automatically.
European Users: use comma in the Filter Part

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

This is my Custom Function and I want to edit it

## Discuss:

Thank you, Christian. Very clean and useful.

John Weinshel, Vashon, WA USA
July 07, 2014 3:32pm

Fails with negative numbers. But simple fix, though. Just simply add a "-" in the Filter characters. Then evaluates properly. Fixed code:

Let(x=Substitute(Filter(TheList;"-0123456789.¶");" ¶";";");

Evaluate("Max(" & x &")"))

John Davis, Houston
August 19, 2015 9:39am

I used your same calculation method for a minimum values custom function. Easy conversion. Be sure to add the "-" in the Filter characters to fix the incompatibility bug with negative numbers.

Find the minimum numeric value from a list of values:

MinNumVal ( TheList )

Let(x=Substitute(Filter(TheList;"-0123456789.¶");"¶&q uot;;";");

Evaluate("Min(" & x &")"))

John Davis, Houston
August 19, 2015 9:44am

The html screwed up the calculation above. Let's try it again:

MinNumVal ( TheList )

Let(x=Substitute(Filter(TheList;"-0123456789.¶");"¶&q uot;;";");

Evaluate("Min(" & x &")"))

You get the idea. Just switch out Min for Max and be sure to add a "-" character in the Filter characters to properly evaluate negative numbers.

John Davis, Houston
August 19, 2015 9:49am

It fails if "TheList" contains only one Value. You need to trap for it

Eric SCHMIDT, Bourg - France
October 10, 2017 8:56am