How do i make sign changer script?

Well an Best way is to use an Surface GUI. If you want your Decals to change automaticly over 30 Seconds. There is an Free model out that is REALLY Helpful. The Model all you have to do is Put your Number ID into the script, And then Subtract 1 After the last number.

Example. Starting.

d=script.Parent.Screen.Picture while true do wait(10) d.Image="http://www.roblox.com/asset/?id=" -- wait(10) d.Image="http://www.roblox.com/asset/?id=" -- wait(10) d.Image="http://www.roblox.com/asset/?id=" -- end

Then your Next Result is...

d=script.Parent.Screen.Picture while true do wait(10) d.Image="http://www.roblox.com/asset/?id=146209125" -- wait(10) d.Image="http://www.roblox.com/asset/?id=146209136" -- wait(10) d.Image="http://www.roblox.com/asset/?id=146135130" -- end

Your End Result

d=script.Parent.Screen.Picture while true do wait(10) d.Image="http://www.roblox.com/asset/?id=146209124" -- State of Hayward wait(10) d.Image="http://www.roblox.com/asset/?id=146209135" -- HVFD wait(10) d.Image="http://www.roblox.com/asset/?id=146135129" -- HDOT end