Plugin not working?

Im trying to make a plugin where when you click it inserts a already anchored part. When I try it it only inserts one part and then it breaks.

PluginManager()
    :CreatePlugin()
        :CreateToolbar("Smooth Part inset")
        :CreateButton(
            "Click to insert a part",
            "Insert a part",
            "IconName.png"  
        )
            .Click:connect(function()
                  Instance.new("Part",Workspace).Anchored = true

            end)

Whats wrong with it?