Use external functions to access FileMaker Pro
plug-ins. Plug-ins add features to FileMaker Pro. For more information, see
Setting plug-in preferences.
External functions are only available if FileMaker Pro plug-ins are installed and enabled on your computer. If no FileMaker Pro plug-ins are installed, you see only the generic external function definition in the Specify Calculation dialog box:
These plug-ins are still supported and continue to use the External function to access the plug-in’s functions. The first parameter is the name of the plug-in function to execute and the second is a parameter that is passed to that function. See the documentation that came with the plug-in for each function’s usage.