Lots of the BE plugin functions use paths in the parameters or in values they return. Please note :
FileMaker paths and plugin paths are not the same thing.
The paths used by the plugin are Operating System paths. On the Mac, they usually start with /Volumes or /Users and on windows will be something like C:\Folder\Path. FileMaker paths often start with file: or filemac: and these WILL NOT work in the plugin as is.
These file: prefixes that you get from things like the Get ( FilePath ) function and others, are unique to FileMaker and don't work anywhere else other than FileMaker itself, including not in the BE plugin.
So if you're mixing and matching FileMaker paths and plugin paths, you will need to convert them between the types in order to use them in other places.
To get an example of the sorts of paths that the plugin uses, use the BE_SelectFile function in the Data Viewer, and choose a file with a known path.
This will return an example of the sort of path used by the function. You can then adjust this path to suit whatever location you need, or to get an example of the difference between selecting a file on the desktop and running the Get ( DesktopFolder ) function.
Any path you pass as a parameter need to be in the same format ( prefix, separators etc ) as this.
FMS is different
The custom functions in the sample file take advantage of the Get(SystemDrive) function. Since FileMaker Server 16, this function no longer returns a value when run on FMS. If you want to use these functions on FMS, you would need to hard code them with a known value instead.
One of the tool files that come with the dropbox share for Sponsors includes our set of Custom Functions we use for converting paths between FMP and plugin and vice versa.