[[ABK]Antonio]

Instead of setting a name, why not just do this...

pawn Code:

new bool:Masked[MAX_PLAYERS] = false;

public OnPlayerText(playerid, text[])
{
    if(Masked[playerid])
    {
        new string[128];
        format(string, sizeof(string), "Stranger says, \"%s\"", text);
        SendClientMessageToAll(pick_a_color, string);
        return 0;
    }
    return 1;
}