[Private200]

First of all, you are using a global textdraw and value will change for everybody; I don't know if that was your intention in first place, just letting you know.

Secondly, use SetTimerEx and forward the player id through it.

PHP код:

SetTimerEx("HideTextdraw", 5000, false, "i", playerid); 


You should be fine that way.

EDIT: about the random function; just search the forums before asking.

PHP код:

stock randomEx(min, max)
{    
    //Credits to ******    
    new rand = random(max-min)+min;    
    return rand;
}
// usage
new _randVal = randomEx(5, 10); // min value is 5, max is 10; assigned to _randVal