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 FileMaker Pro Custom Functions

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  Average rating: 4.4  (18 votes)
  Discuss this Custom Function

Jo Des Rosiers, Company

Give you the last month in number

Sample Input:
lastMonth ( "" )
lastMonth(Date (1;20;2015))
lastMonth(Date (10;7;2015))
Sample Output:
depend on the current date

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


Give you the last month in number. If the date is an empty string it will depend on the current date.

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


Let ( cd = Get ( CurrentDate ) ;
Month ( cd - date( cd ) )

Using Let() save change of current data in calculating.

unix, Japan
March 01, 2016 7:37pm

Hello unix,
I presume "date( cd )" must be "month( cd )" ?
Best regards.

Bernamo, Belgium
March 02, 2016 12:27pm

I edited the function to take a date in parameter. If you give and empty string it will work like the last version.

Jo, Switzerland
March 03, 2016 10:09am

Thanks Bernamo,
It should be Day( cd ).
(And "current data" should be "current date", of course)

aDate - Day ( aDate )
returns the last date of previous month.

I frequently confuse date and day...

unix, Japan
March 03, 2016 4:28pm

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