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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.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed


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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