Trying to use String Pattern in an admin script?

It's my first time ever trying String patterns and i'm getting really confused on how to use them in my admin script command. What I want to be able to do is be able to say '/e clone/player/number' then the command would clone the player as many times as it says after the slash. But at the moment i've only got the findplayer part and find the slash. Please could someone help.

local isAdmin = {[14946581] = true, [122532233] = true, [17008190] = true}

function findPlayer(name)
    for _,v in pairs(game.Players:GetChildren()) do
        if string.lower(string.sub(v.Name, 1, #name)) == string.lower(name) then
            return v
        end
    end
end


function onChatted(message, player)
	pattern = '/'
    if message:sub(1, 9):lower() == ("/e clone/"):lower()and isAdmin[player.UserId] then
	victim = findPlayer(message:sub(10))
	if victim and victim.Character then
		message:sub(10):find(pattern)
		
		
		end
	end
end

Thank you.