Updating plug-ins
You can use calculations and scripts to check the version of installed plug-ins, then update plug-ins with plug-ins stored in container fields in a FileMaker Pro file. To see examples of script and calculation syntax, see Plug-in update example.
To update plug-ins:
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Note  While you need only the container field on the layout, you might consider adding the plug-in name, description, and version number fields so you have access to this information.
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Notes
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For plug-ins to install, the Allow Solutions to Install Files option must be selected in the client’s Plug-in preferences. See Setting plug-in preferences.
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Related topics 
Creating custom plug-ins
Installing plug-ins
Get(InstalledFMPlugins)
Install Plug-In File