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:
1.
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3.
Create a layout in which to display the stored plug-in and, optionally, descriptive information about the plug-in, then add to the layout the appropriate fields you created in step 2.
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.
4.
Create a script that compares the version of the installed plug-in with the version of the required plug-in, then uses the Install Plug-In script step to update the plug-in, if needed.
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Notes
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Clients must be running FileMaker Pro 12 or later to update plug-ins using this method.
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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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Only one plug-in can be stored in each container field, but you can view all plug-in information by creating multiple plug-in container fields on a single layout.
Related topics 
Creating custom plug-ins
Installing plug-ins
Get(InstalledFMPlugins)
Install Plug-In File