Brian Dunning's FileMaker Custom Functions

CheckSofi ( Sofi )

Validater for the Dutch Sofinumber against the '11-proef'.

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Hartger Visser   Hartger Visser
Teuker Beheer BV

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  Sample input:
CheckSofi (211456792)
  Sample output:

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Checks the Dutch sofinumber far validity.
Syntax: CheckSofi ( SofiNummer )

Returns True if SofiNummer passes the '11-proef',
False if it does not pass the test.
A return of 'True' does not mean it's a valid/existing number !



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

Under construction. Email me your wish list for improvements.