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The source of the problem is the fact that this is a Motion 4 template, not a Motion 5 project. Back then, the parameter publishing as we know it today did not exist yet.
You can still use this Project in Motion 5 and FCPX but in order to make any adjustments in Final Cut, you will need to open the template in Motion 5 first and publish the Drop Zones as well as the parameters that you'd like to modify afterwards.