Dialogs messed up upon FilteringEnabled?

Hello. I have a tycoon where you have to talk with a NPC to own a factory. But, it's not that what I want to talk about. Upon the chance of get exploited, I turned on the FilteringEnabled to do some tests. And... the results are here:

--FilteringEnabled: Works at play mode, fails at servertest - ServerScript and LocalScript either
script.Parent.Head.Dialog.DialogChoiceSelected:connect(function(p,c)
    print(p.Name,c.Name)
end)

And even the dialog choices aren't shown to other players (without any script), just to the player who is chatting. How to solve that?