diff --git a/server/gameserver/mtb/Hero.h b/server/gameserver/mtb/Hero.h
index 589d1abc..1ba5aaf0 100644
--- a/server/gameserver/mtb/Hero.h
+++ b/server/gameserver/mtb/Hero.h
@@ -50,6 +50,7 @@ namespace mtb
     float hp_ratio() const { return hp_ratio_; };
     float damage_ratio() const { return damage_ratio_; };
     float defence_ratio() const { return defence_ratio_; };
+    const std::string bt() const { return bt_; };
 
     bool has_id() const { return __flags__.test(0);};
     bool has_radius() const { return __flags__.test(1);};
@@ -91,6 +92,7 @@ namespace mtb
     bool has_hp_ratio() const { return __flags__.test(37);};
     bool has_damage_ratio() const { return __flags__.test(38);};
     bool has_defence_ratio() const { return __flags__.test(39);};
+    bool has_bt() const { return __flags__.test(40);};
 
   protected:
 
@@ -134,9 +136,10 @@ namespace mtb
     float hp_ratio_ = 0.0f;
     float damage_ratio_ = 0.0f;
     float defence_ratio_ = 0.0f;
+    std::string bt_;
 
 public:
-    std::bitset<40> __flags__;
+    std::bitset<41> __flags__;
   };
 
 };
diff --git a/server/gameserver/mtb/mtb.all.cc b/server/gameserver/mtb/mtb.all.cc
index da90ed02..0fd70da1 100644
--- a/server/gameserver/mtb/mtb.all.cc
+++ b/server/gameserver/mtb/mtb.all.cc
@@ -297,7 +297,7 @@ namespace mtb
     {
       a8::reflect::Class* meta_class = nullptr;
       if (!meta_class) {
-        meta_class = new a8::reflect::Class("Hero", 40, 0);
+        meta_class = new a8::reflect::Class("Hero", 41, 0);
         meta_class->SetSimpleField(0, "id", a8::reflect::ET_INT32, my_offsetof2(Hero, id_));
         meta_class->SetSimpleField(1, "radius", a8::reflect::ET_FLOAT, my_offsetof2(Hero, radius_));
         meta_class->SetSimpleField(2, "move_speed", a8::reflect::ET_INT32, my_offsetof2(Hero, move_speed_));
@@ -338,6 +338,7 @@ namespace mtb
         meta_class->SetSimpleField(37, "hp_ratio", a8::reflect::ET_FLOAT, my_offsetof2(Hero, hp_ratio_));
         meta_class->SetSimpleField(38, "damage_ratio", a8::reflect::ET_FLOAT, my_offsetof2(Hero, damage_ratio_));
         meta_class->SetSimpleField(39, "defence_ratio", a8::reflect::ET_FLOAT, my_offsetof2(Hero, defence_ratio_));
+        meta_class->SetSimpleField(40, "bt", a8::reflect::ET_STRING, my_offsetof2(Hero, bt_));
       }
       return meta_class;
     }
diff --git a/server/tools/protobuild/mt.proto b/server/tools/protobuild/mt.proto
index ba0ba6c7..63bf55ad 100755
--- a/server/tools/protobuild/mt.proto
+++ b/server/tools/protobuild/mt.proto
@@ -259,6 +259,8 @@ message Hero
     optional float hp_ratio = 63;
     optional float damage_ratio = 64;
     optional float defence_ratio = 65;
+
+    optional string bt = 70;
 }
 
 message Robot