Tagging from file name

I would like to create multiple tags from a files filename with words seperated by spaces.
For example a file named "test dec 2016" would be tagged with "test" , "dec", "2016"
when I use the action add tags it adds a tag that is the complete filename rather than the individual words as separate tags which is what I am aiming for.
Is there a way to do this?
I tried changing adding comments with the filename (which does seperate them as comments is a flat text field) but when I tried to take comments to tags it uses the complete comment field as one tag.

You need to split up the name. Search the help for "match patterns". You can create custom attributes to match each part then use them to tag the file.