[CalvinC]

If you're using the textdraw globally, which it looks like, there's no need to use SetTimerEx.
Here's an example to set up your timer:
Where you display the textdraw, start the timer

pawn Код:

SetTimer("MyPublic", 4000, false);

"MyPublic" - The public the timer will call when it ends
4000 - The time it takes before the public is called
false - A boolean(true/false) if the timer should repeat or not, we don't want it to repeat, just be called once, so we use false

Now the public:

pawn Код:

forward MyPublic(); // When creating a public function, you always need to forward it
public MyPublic() // The public the timer will call, any code under the public will be executed when the timer ends
{
    foreach(new i: Player) // Loop through all players, assuming you have the textdraw globally for all players
    {
        TextDrawHideForPlayer(i, Textdraw0); // Hide the textdraw for all players, "i"
    }
}

If you only have the textdraw for 1 person at a time, you should use [playerid] on your variable, as well as SetTimerEx.
If you're using it for a cmd etc:

/welcomeall
Loop through all players and show the textdraw

Then just set the public up like in the example.