Creating custom plug-insIf you are a C or C++ programmer and familiar with calculations in FileMaker Pro and FileMaker Pro Advanced, you can create plug-ins that extend the feature set of the FileMaker application. The plug-ins can take advantage of recursion and looping or hook into other programming interfaces.To use plug-ins, FileMaker Pro users need to allow solution files to install plug-ins and enable plug-ins. For FileMaker Server-hosted files, the server administrator needs to allow the Install Plug-In File script step to update FileMaker Server plug-ins in the Server Admin Console.In Windows, the plug-in extension must be .fmx. In Mac OS X, the plug-in extension must be .fmplugin.
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2. Click Configure and define or edit a calculation field to access external functions provided by the plug-in, if required.
3. In the Specify Calculation dialog box, choose one of the functions provided by the plug-in as the calculation formula.
4. If you want plug-in updates to be installed automatically, ensure Allow Solutions to Install Files is selected.Note For security reasons, system administrators might require users to disable Allow Solutions to Install Files. Contact the system administrator at your customer site for more information.