From 78cd2b4566e20487aa1f937bb7a1aa8bf25c96c1 Mon Sep 17 00:00:00 2001
From: Anna Shaleva <shaleva.ann@nspcc.ru>
Date: Thu, 6 Oct 2022 10:08:48 +0300
Subject: [PATCH] core: add example to VUB comment

---
 pkg/core/transaction/transaction.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkg/core/transaction/transaction.go b/pkg/core/transaction/transaction.go
index 57047f8fe..557b20e59 100644
--- a/pkg/core/transaction/transaction.go
+++ b/pkg/core/transaction/transaction.go
@@ -47,7 +47,8 @@ type Transaction struct {
 	NetworkFee int64
 
 	// Maximum blockchain height exceeding which
-	// transaction should fail verification.
+	// transaction should fail verification. E.g. if VUB=N, then transaction
+	// can be accepted to block with index N, but not to block with index N+1.
 	ValidUntilBlock uint32
 
 	// Code to run in NeoVM for this transaction.