DialogChoiceSelected door in FE?

Hello there,

I am trying to make it so when a Player has selected the right DialogChoice, a door in Workspace opens. The only problem is: It does not work.

This is the script I am using right now. (it's a regular Script inside the Dialog which is inside the Head of an NPC)

local lasers = script.Parent.Parent.Parent["Wall_Laser"]:WaitForChild("Field")
local opened = false

script.Parent.DialogChoiceSelected:Connect(function(player, Choice)
    if Choice.Name == "A3 X" then
        if opened == false then
            opened = true

            for i = 1,8 do
                lasers.Transparency = lasers.Transparency + 0.075
                wait(0.005)
            end
            lasers.CanCollide = false
        end
    end
end)

For some reason, the script only works in Studio, but not in an actual server. ~ Note: no errors.

Thanks in advance.

Greetings, Milan G.