How to open a loading gui with a script?

Dont let the title confuse you.... 1. I have a script that finishes loading its text. After the text, I want another gui to open and start loading. I made a script but it doesnt work. I can open the frames and images and all but the scripts inside dont work. MapLoad is the name of the gui 2. Load family tree =MapLoad.Load.Bar.script

This is the script That I want to use to fi

function Visible()
script.Parent.Parent.Parent.Parent.Parent.MapLoad.Load.Visible = true
end
Visible()

1. Script

yolo = script.Parent.Parent.Parent.Parent.MapLoad.Load.Bar.runTime 
local lol = 0
while wait(math.random(.1,.25)) do
    lol = lol + math.random(.1,.25)
    script.Parent.Size = script.Parent.Size + UDim2.new(0,lol,0,0)
end