problems with gui

[Enargy,]

I have problems with doing this help panel, When I write something in the text box below and I press the button 'send' does not send the text to the memo, can anyone solve the problem?

addEventHandler("onClientResourceStart", resourceRoot, 
    function() 
        window = guiCreateWindow(0.26, 0.13, 0.48, 0.65, "SUPPORT", true) 
        guiWindowSetMovable(window, false) 
        guiWindowSetSizable(window, false) 
        guiSetVisible(window, false) 
  
        edit_writer = guiCreateEdit(0.03, 0.91, 0.75, 0.06, "", true, window) 
        btn_send = guiCreateButton(0.83, 0.91, 0.14, 0.06, "Send", true, window) 
        guiSetProperty(btn_send, "NormalTextColour", "FFAAAAAA") 
        memo_help = guiCreateMemo(0.02, 0.06, 0.95, 0.83, "", true, window) 
        guiMemoSetReadOnly(memo_help, true)     
    end) 
     
    function toggleWindow() 
    guiSetVisible (window, not guiGetVisible ( window ) ) 
    showCursor(guiGetVisible(window)) 
    end 
    bindKey("F6", "down", toggleWindow) 
     
    function sendMessage() 
    if isElement(window) then 
        local newText = guiGetText(edit_writer) 
        if newText and string.len(newText) > 0 then 
            local oldText = guiGetText(memo_help) 
            if not oldText then oldText = "" end 
            oldText = oldText .. getPlayerName(localPlayer) .. ": " .. newText .. "\n" 
            guiSetText(memo_help, oldText) 
            guiSetText(edit_writer, "") 
            guiMemoSetCaretIndex(edit_writer, string.len(oldText)) 
  
        end  
    end 
end 
  
function sendMSG() 
if (source == btn_send ) then 
local localP = getPlayerFromName(guiGetText(memo_help)) 
if localP then 
    sendMessage(localP) 
    end 
end 
end 
addEventHandler("onClientGUIClick", root, sendMSG) 
  

[Castillo]

local localP = getPlayerFromName(guiGetText(memo_help)) 
if localP then 

What are these for?

[Enargy,]

local localP = getPlayerFromName(guiGetText(memo_help)) 
if localP then 

What are these for?

get the name of the player along with the text

[Castillo]

And how would that work...? isn't that the memo containing all the messages?

[Enargy,]

And how would that work...? isn't that the memo containing all the messages?

I want people to write your text on the bottom bar, click the button to 'send' the written text in the bottom bar is displayed in the memo

[Castillo]

Yeah, but if the memo contains the messages sent, then your getPlayerFromName will return always false.