help need with player connect

[Reaper13 0]

hi everybody, i was given this script to add to my init file

 

override void InvokeOnConnect(PlayerBase player, PlayerIdentity identity)
{
    super.InvokeOnConnect(player, identity);

    ScriptRPC rpc = new ScriptRPC();
    rpc.Write(identity.GetName() + "has joined the server");

    rpc.Send(null, RPC_USER_ACTION_MESSAGE, true);
}

override void InvokeOnDisconnect(PlayerBase player)
{
    super.InvokeOnDisconnect(player);

    ScriptRPC rpc = new ScriptRPC();
    rpc.Write(player.GetIdentity().GetName() + "has left the server");

    rpc.Send(null, RPC_USER_ACTION_MESSAGE, true);
}

but it doesnt work, i get a crash log saying

UK-W-2521-E, 08.03 2021 07:50:28
Can't compile mission init script'!
$CurrentDir:mpmissions\dayzOffline.chernarusplus\init.c(407): Can't find variable 'RPC_USER_ACTION_MESSAGE'
Runtime mode
CLI params: ip 51.195.242.18 port 2302 noPause  noSound  servermod

 

now im no expert at coding at all, and i cant find anything explaining to an idiot like me what a RPC_USER_ACTION_MESSAGE is or how to correct it or if im missing something?

any help would be greatly appreciated, thanks

Edited March 8, 2021 by Reaper13