Dialog Choice Script Not Working, I need help please!?

Here is the code:

local Player = game.Players.LocalPlayer
local Leaderstats = Player:WaitForChild("leaderstats")


script.Parent.DialogChoiceSelected:connect(function(player,dialog)
 if dialog.Name=="Yes" then
    if Leaderstats.Cash.Value > 249999 then 
        Leaderstats.Cash.Value = 0
        Leaderstats.Rep.Value = 0
        Leaderstats.Rebirths.Value = Leaderstats.Rebirths.Value + 1
        end
    end
end)

It for some reason doesn't work, idk why. I've tried it and tried it, but it still doesn't work. Please help me!