How do you make this script only play once?

So this is my script

while true do wait(1) script.Parent.Text = "Intermission: 9" wait(1) script.Parent.Text = "Intermission: 8" wait(1) script.Parent.Text = "Intermission: 7" wait(1) script.Parent.Text = "Intermission: 6" wait(1) script.Parent.Text = "Intermission: 5" wait(1) script.Parent.Text = "Intermission: 4" wait(1) script.Parent.Text = "Intermission: 3" wait(1) script.Parent.Text = "Intermission: 2" wait(1) script.Parent.Text = "Intermission: 1" wait(1) script.Parent.Text = "Loading..." wait(5) script.Parent.Text = "Building Map..." wait(2) script.Parent.Text = "Map Loaded!" end

change = script.Parent.Value

--Not Saying Im Terrible at this tho.