HelloWorld_Text = {}
local channel = "SAY"

SLASH_HELLO_WORLD_ADD1 = "/hwadd"
SLASH_HELLO_WORLD_ADD2 = "/helloworldadd"

SlashCmdList["HELLO_WORLD_ADD"] = function(msg)
    local id, text = msg:match("(%S+)%s+(.+)")
    if id and text then
        HelloWorld_Text[id:lower()] = text
    end
end

SLASH_HELLO_WORLD_SHOW1 = "/hwshow"
SLASH_HELLO_WORLD_SHOW2 = "/helloworldshow"

SlashCmdList["HELLO_WORLD_SHOW"] = function(msg)
    local text = HelloWorld_Text[msg:lower()]
    if text then
        print(text)
    end
end