function OnChatUserMessage(chatType, nick, msg)
 if (chatType == L2ChatType.CHAT_PARTY) then
 Message = string.lower(msg); -- Converts message to lower case letters.
 Message = Message:gsub("^%s*(.-)%s*$", "%1"); -- Trimming message of spaces on start.
 if (Message == "start") then
 ProcessCommand("/scriptStart urscript.lua");
 ShowToClient("Debug","script xy On");
 end;
 if (Message == "stop") then
 ProcessCommand("/scriptStop urscript.lua");
 ShowToClient("Debug","script xy Off");
 end;
 end;
end;