if statement not running global functions?

i have 2 pieces of code, this:

--textscenes
-- the file used to control the chat function

_G.wt1 = false
_G.wt3 = false

_G["WelcomeText1"] = function()
local p = game.Players:GetChildren()
_G.openChat()
    for i = 1, #p do
        _G.showspacebarchat()
        p[i].PlayerGui.Chat.ChatWindow.ChatText.Text = "Welcome to Roblox Party!"
        _G.talkExcitedUltraTechX:Play()
        _G.talkExcitedValien:Play()
    end
    wait(0.25)
    _G.wt1 = true
end


_G["WelcomeText2"] = function()
    local p = game.Players:GetChildren()
    for i = 1, #p do
        _G.hidespacebarchat()
    p[i].PlayerGui.Chat.ChatWindow.ChatText.Text = "what board would you like to play on?"
    _G.talkExplainUltraTechX:Play()
        _G.talkExplainValien:Play()
    end

    _G.showBoardSelection();

end

_G["WelcomeText3"] = function()
    local p = game.Players:GetChildren()
    for i = 1, #p do
        _G.showspacebarchat()
        p[i].PlayerGui.Chat.ChatWindow.ChatText.Text = "alrighty then, lets go to ".._G.board.." land".."!"
        _G.talkExcitedUltraTechX:Play()
        _G.talkExcitedValien:Play()
    end
    wait(0.25)
    _G.wt3 = true
end

_G["WelcomeText4"] = function()
    local p = game.Players:GetChildren()
    _G.closeChat()
    for i = 1, #p do
        _G.hidespacebarchat()

    _G.creategoToPortal()
    _G.enablegoToPortal()

    end

end

and this file:

--keyhandler
--modulescript code:
local module = {}

function module.onKeyPress(inputObject, gameProcessedEvent)
    if inputObject.KeyCode == Enum.KeyCode.Space then
        print("Spacebar was pressed")
        if(_G.wt1 == true) then
            _G.wt1 = false
            _G.WelcomeText2()
        elseif(_G.wt3 == true) then
            _G.wt3 = false
            _G.WelcomeText4()       
        end     
    end
end

return module

this code works in studio, but not in the real game. Why is this not working? Thanks in advance.