diff --git a/ibc.token/include/ibc.token/ibc.token.hpp b/ibc.token/include/ibc.token/ibc.token.hpp
index fdea27d..82027e5 100644
--- a/ibc.token/include/ibc.token/ibc.token.hpp
+++ b/ibc.token/include/ibc.token/ibc.token.hpp
@@ -525,7 +525,7 @@ namespace eosio {
       
       // code,scope(_self,_self.value)
       struct [[eosio::table]] hub_trx_info {
-         uint64_t              cash_seq_num; // set by seq_num in cash action
+         uint64_t              id; // set by seq_num in cash action
          uint64_t              cash_time_slot;
          name                  from_chain;
          name                  from_account;
@@ -542,7 +542,7 @@ namespace eosio {
          uint8_t               forward_times;
          uint8_t               backward_times;
 
-         uint64_t primary_key()const { return cash_seq_num; }
+         uint64_t primary_key()const { return id; }
          fixed_bytes<32> by_orig_trx_id()const { return fixed_bytes<32>(orig_trx_id.hash); }
          fixed_bytes<32> by_hub_trx_id()const { return fixed_bytes<32>(hub_trx_id.hash); }
       };
diff --git a/ibc.token/src/ibc.token.cpp b/ibc.token/src/ibc.token.cpp
index 7e298b5..bb638f0 100644
--- a/ibc.token/src/ibc.token.cpp
+++ b/ibc.token/src/ibc.token.cpp
@@ -1550,8 +1550,9 @@ namespace eosio {
 
       /// record to hub table
       auto _hubtrxs = hubtrxs_table( _self, _self.value );
+      auto p_id = _hubtrxs.available_primary_key();
       _hubtrxs.emplace( _self, [&]( auto& r ) {
-         r.cash_seq_num       = cash_seq_num;
+         r.id                 = p_id; /// can not use cash_seq_num,
          r.cash_time_slot     = get_block_time_slot();
          r.from_chain         = from_chain;
          r.from_account       = from_account;