Guys I think we have to think simpler with this guy.
In the game, make a brick. Click on events. Make it so the first line reads:
onActivate -> Player -> changeDatablock [Robloxian]
The robloxian mod doesn't change you into a robloxian, it adds the playertype alongside the normal one. You need to change your actual player into the robloxian via events like I described above, or by making a minigame and changing the playertype from 'standard' to 'robloxian'.