how to make math.random with strings not just numbers?

this code: local RandomMap = math.random("GreenForest", "some map", "green desert") it doesnt really work but it only works with numbers any help on how to get it working

You can do that using arrays, you need to generate number from 1 to size of the array and then pick the generated index from the array, the array will contain strings you need:

local maps = {"GreenForst", "some map", "green desert"}

local random_index = math.random(1, #maps)
local random_map = maps[random_index]

This takes too much lines to write so after bit of shortening you get the following result:

local maps = {"GreenForst", "some map", "green desert"}

local function get_random_map()
	return maps[math.random(1, #maps)]
end