When changing the boolvalue game round won't end?

I have this part of my game script when the bool value turns true then the game should stop but then when I change it to true in server storage when testing it in studio the round will not end. Can you help?

    for _,player in pairs(Game.Players:GetChildren()) do
                local Gui = player.PlayerGui.Gui
                Gui.Label.Text = LocationMsg
                repeat
                    wait(1)
                   GameTime = GameTime - 1
                     Gui.Label.Text = "Game time: "..GameTime

                  until  GameTime  == 0 or IsBombDisarmed == true
                  if IsBombDisarmed == true then
                     Gui.Label.Text = WinMsg
                     for _, player in pairs(Game.Players:GetChildren()) do
                        local Gui = player.PlayerGui.Gui
                        Gui.Label.Text = WinMsg
                        player.leaderstats.Credits.Value = player.leaderstats.Credits.Value + WinningAmount
                        wait(2)
                        GameTime = RestoreGameTimeAmmount
                        break
                        end
                   elseif GameTime == 0 then

                        for _, player in pairs(Game.Players:GetChildren()) do
                        local Gui = player.PlayerGui.Gui
                        Gui.TextLabel.Text = LoseMsg
                        wait(2)
                        GameTime = RestoreGameTimeAmmount
                        break

                        end
                    end
                end      
            end  
        end