diff --git a/bcutils.js b/bcutils.js
index f293daa..894a0df 100644
--- a/bcutils.js
+++ b/bcutils.js
@@ -13,6 +13,7 @@ const BC_TRANSID_MAX_SEQID = 9999999;
 const BC_TRANS_FUNC_ACTIVATE = 1;
 const BC_TRANS_FUNC_MINT_SHARD = 2;
 const BC_TRANS_FUNC_EVOLVE = 3;
+const BC_TRANS_FUNC_PLUGIN = 4;
 
 const BC_EPOCH = 1643212800;
 
@@ -149,6 +150,7 @@ exports.BC_TRANSID_MAX_PARAMS_NUM = BC_TRANSID_MAX_PARAMS_NUM;
 exports.BC_TRANS_FUNC_ACTIVATE = BC_TRANS_FUNC_ACTIVATE;
 exports.BC_TRANS_FUNC_MINT_SHARD = BC_TRANS_FUNC_MINT_SHARD;
 exports.BC_TRANS_FUNC_EVOLVE = BC_TRANS_FUNC_EVOLVE;
+exports.BC_TRANS_FUNC_PLUGIN = BC_TRANS_FUNC_PLUGIN;
 exports.NONE_TYPE = NONE_TYPE;
 exports.HERO_TYPE = HERO_TYPE;
 exports.EQUIP_TYPE = EQUIP_TYPE;