Previous page button for teleporter quest

[Costy123 0]

Hy, I have this simple quest and I do not know how to make "previous page button". Can, please, somebody spend his/her time to explain me?

Spoiler

quest teleporters begin
	state start begin
		when 70058.use begin
			local x
			local y
			local t
			local e = pc.get_empire()
			say_title("Teleporter:")
			say("Select:")
			local s = select("Map1", "Map2", "Seungryong", "Desert", "Next page", "Exit")
				if s==1 then -- map1
					say_title("Teleporter:")
					say("Select:")
					t = select("Red", "Yellow", "Blue", "Previous page", "Exit")
						if t==1 then -- red map1
							x="469300"
							y="964200"
						elseif t==2 then -- yellow map1
							x="55700"
							y="157900"
						elseif t==3 then -- blue map1
							x="969600"
							y="278400"
						elseif t==4 then -- previous page
						
						
						
						end -- if
				
				end -- if
		end -- when 70058
	end -- state
end -- quest

 

 

[Costy123 0]

up

[WeedHex 661]

it is absolutely not like you are thinking

Study table.getn()   table.insert() usage.