How do you make a DialogChoice Function?

So, I've been working on the following script for a while:

local elevator = game.Workspace.Elevator --shorter for typing purposes

--this is a short for loop to find the first Part in the elevator

for i, v in pairs(elevator:GetChildren()) do
if v:IsA("BasePart") then --all part types inherit from basepart therefore they're all baseparts
elevator.PrimaryPart = elevator.door2 -- set the primary part
break -- break statement will stop the for loop and go back up scope
end
end


function onClicked()
elevator.door2.CanCollide = true
for i = 1, 20, 1 do
elevator.door2.Transparency = elevator.door2.Transparency - .05
wait(.05)
end
for i = 1, 800 do
elevator:SetPrimaryPartCFrame(elevator:GetPrimaryPartCFrame() * CFrame.new(0, -0.1, 0))
wait(.01)
end
end
script.Parent.ClickDetector.MouseClick:connect(onClicked)

How can I make this script be performed when a DialogChoice/Dialog is selected? Rather than functioning onClicked, would it be something like DialogChoiceSelected?

You'd have to put this script under a Dialog instance directly, but you could do this:

local elevator = game.Workspace.Elevator --shorter for typing purposes

for i, v in pairs(elevator:GetChildren()) do
if v:IsA("BasePart") then --all part types inherit from basepart therefore they're all baseparts
elevator.PrimaryPart = elevator.door2 -- set the primary part
break -- break statement will stop the for loop and go back up scope
end
end

local d = script.Parent.DialogChoice1 --You'd have to make a DialogChoice instance named DialogChoice1

function onClicked(c, p) --Set this to accept 2 parameters, choice and player
	if c = d then
		elevator.door2.CanCollide = true
		for i = 1, 20, 1 do
			elevator.door2.Transparency = elevator.door2.Transparency - .05
			wait(.05)
		end
		for i = 1, 800 do
			elevator:SetPrimaryPartCFrame(elevator:GetPrimaryPartCFrame() * CFrame.new(0, -0.1, 0))
			wait(.01)
		end
	end
end

script.Parent.DialogChoiceSelected:connect(onClicked())

I'm pretty sure this'd work, then. I hope, at least. Not sure, because I don't have the same workspace as you right now.