WoWInterface - giving loot automatically to someone

Hi,

Apologies if this has been covered, but I ran google and searches and couldn't find anything.
So I very new to coding in lua, and I saw that if I want to give out loot to myself I can use:

Code:

local playerName = UnitName("player")

        SetLootMethod("Master",playerName,"2")

        for ci = 1, 40 do

        local mMaster = GetMasterLootCandidate(li, ci)

            if mMaster == UnitName("player") then

                    GiveMasterLoot(li, ci)

            end

        end

I would like to pass code to the addon using either a slash command + player name or slash command + selected player, so when I am the master looter all loot would go to that player.

this is the code I tried at the end of my slash command:

Code:

elseif input == "" then

        print("NLoot: Invalid Command, Input '/nl help' to get a list of available commands")

        else

                local rString = input

                for ci = 1, 40 do

                  local mMaster = GetMasterLootCandidate(li, ci)

                  if mMaster == rString then

                      GiveMasterLoot(li, ci)

                  end

                end

        end

But it returns an error.
Is there an easier way to do this?
Thank you for the help in advance.