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.

There's two reasons this could be erroring, you'll need to add a WaitForChild or either you added something there that only localscripts can detect.