Commands restriction (Admin Commands through functions)?

Hmm, let me remake your script (I've been doing Admin Commands for along time now), also I posted this kind of coding on your other question;

local Admins = {} --This is where the Admins will be

local fucntion ChkAdmin(plr,str) --Here is the function where it'll check if the player is an Admin
for i = 1, #Admins do if plr:lower() == Admnis[i]:lower() then return true end end --If the player is an Admin, then the function will return it true
return false --If the player isn't, then it'll return false
end --The end to end the function

local function onChat(plr,msg) --Now, lets use this for the chatted commands

if not ChkAdmin(plr.Name,false) then return end --If the player is an Admin, then the Player will beable to use the command, but if not, then the player won't beable to use it :D

if msg:lower() == "god" then --If the player chatted 'god' then
if plr and plr.Character and plr.Character:FindFirstChild("Humanoid") then --If player exists, the Character exists, and Humanoid exists within Humanoid then
plr.Character.Humanoid.MaxHealth = 1/0 --I use 1/0 for infinite
plr.Character.Humanoid.Health = 9e9 --This will equal to, about, 9000000? :P
plr.Character.Humanoid.Jump = true --This will make the player Jump
end --The end to end the code for to check the requirements 'if' statement
end --The end to end the code for the chatted command

end --Now, this ends the 'onChat' function

local function AdminControl(plr) --Now, lets use a seperate function for the script
plr.Chatted:connect(function(msg) onChat(plr,msg) end) --This will connect 'onChat' to the player
end --The end to end the code for 'AdminControl'

game.Players.PlayerAdded:connect(AdminControl) --When a player joins, the script will connect 'AdminControl' to the player
for i,v in pairs(game.Players:GetPlayers()) do AdminControl(v) end --I use this as an just-in-case

Hope this helped!