Minigame script not working?

Hi guys! This is a minigame script that one player types in a question, and four answers and the correct answer. The script then copies those textbox values to stringvalues. The questions and answers are shown to all players and they have to go to the coloured brick they think is right and they get points if they do so.

However, it is not picking a player (It picks random players, like 20 times) and also, this line

for i, v in pairs(game.Players:GetPlayers()) do v.PlayerGui.AnnouncingGui.Announcer.Text = "Intermission!" end

is not displaying the gui :( Any ideas? Thanks

function chooseplayer()
list = {}
for i,v in pairs (game.Players:GetPlayers()) do
table.insert(list,v)
end
num1 = math.random(1,#list) --Number
num1 = list[num1] -- Value from the table
print(num1)
num1.PlayerGui.LeaderGui.SelectedColour.Visible = true
num1.PlayerGui.LeaderGui.TextLabelOne.Visible = true
num1.PlayerGui.LeaderGui.TextLabelTwo.Visible = true
num1.PlayerGui.LeaderGui.TextLabelThree.Visible = true
num1.PlayerGui.LeaderGui.TextLabelFour.Visible = true
num1.PlayerGui.LeaderGui.TextLabelFive.Visible = true
num1.PlayerGui.LeaderGui.TextLabelSix.Visible = true
num1.PlayerGui.LeaderGui.Done.Visible = true
for i, v in pairs(game.Players:GetPlayers()) do
    v.PlayerGui.QuestionsGui.Question.Visible = true
    v.PlayerGui.QuestionsGui.One.Visible = true
 v.PlayerGui.QuestionsGui.Two.Visible = true
 v.PlayerGui.QuestionsGui.Three.Visible = true
 v.PlayerGui.QuestionsGui.Four.Visible = true
 end
for i = 1, #list do
table.remove(list, i)
end
end



while true do
if game.Players.NumPlayers > 1 then
chooseplayer()
else 
print("Error. Not enough players")
game.Workspace.Red.Value = ""
game.Workspace.Green.Value = ""
game.Workspace.Yellow.Value = ""
game.Workspace.Blue.Value = ""
game.Workspace.CorrectColour.Value = ""
game.Workspace.Question.Value = ""
for i, v in pairs(game.Players:GetPlayers()) do
    v.PlayerGui.AnnouncingGui.Announcer.Text = "Intermission!"
 end
wait(5)
for i, v in pairs(game.Players:GetPlayers()) do
    v.PlayerGui.AnnouncingGui.Announcer.Text = ""
 end
for i, v in pairs(game.Players:GetChildren()) do
    v.PlayerGui.QuestionsGui.One.Visible = false
 v.PlayerGui.QuestionsGui.Two.Visible = false
 v.PlayerGui.QuestionsGui.Three.Visible = false
 v.PlayerGui.QuestionsGui.Four.Visible = false
end
end
end