[Konstantinos]

1st way:

pawn Код:

if( !sscanf( params, "ui", Target, Level ) ) 
{
     // Code
     return 1;
}
else return SendClientMessage( playerid, COLOR_RED, "USAGE: /setvip <playerid> <level>" );

2nd way:

pawn Код:

if( sscanf( params, "ui", Target, Level ) ) return SendClientMessage( playerid, COLOR_RED, "USAGE: /setvip <playerid> <level>" );
// Code
return 1;