A bid of 5 Notrump after a trump suit is agreed upon asks partner to bid a grand slam if he holds at least two of the top three trump honors

. If the partner does not have this holding he bids six of the agreed suit. This bid cannot be used in conjunction with Blackwood as 5 Notrump is a component of that bid that asks for Kings.

A bid of 5 Notrump with no agreed trump suit indicates the trump suit as the last suit bid.  

Advance method:

If Spade is trump: 
6C : Ace/King of trump. {6D:relay} 
6D : Queen of trump. 
6H : 0 top honors & extra length. 
6S : No top honors. 
6NT: 2 top honors. 
7S : All three top honors.

If Hear is trump:
6C : Ace/King of trump. {6D:relay}
6D : Queen of trump.
6H : No top honors.
6NT: 2 top honors.
7H : All three top honors. 

If Diamond is trump: 
6C : 1 top honor. 
6D : Non top honors. 
6NT: 2 top honors. 
7D : All three top honors.

If Club is trump:
6C : 0/1 honors.
6NT: 2 top honors.
7C : All three top honors.