Is it possible to see a file .3dm ?
is it possible to see a preview of file .3dm (or 3D) in the Container ?
If you look up container fields in FileMaker help, you'll find that .3dm is not a suported file format so it would appear unlikely that you can view the image in the container field.
You might be able to use a web viewer.
And you can use insert file to insert either the file or a reference to the file and then FileMaker can open the file with your computer's default application for that file type as a way to view the contents of the file.
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