[bogeymanEST]

You could do a loop...

pawn Код:

for(new i = 0; i < new_name_string_length; i++)
{
    switch(new_name_string[i])
    {
        case '&', '$', '@', '^': return SendClientMessage(playerid, 0xFF0000FF, "Invalid characters!");
        default: continue;
    }
}
//Here goes your code to change the nick