diff --git a/server/gameserver/ability.cc b/server/gameserver/ability.cc
index e4b07b69..8006358e 100644
--- a/server/gameserver/ability.cc
+++ b/server/gameserver/ability.cc
@@ -19,6 +19,7 @@ struct AttrAddition : public std::enable_shared_from_this<AttrAddition>
     int attr_id;
     float value;
     std::shared_ptr<AttrAddition> holder;
+    std::shared_ptr<std::function<std::string()>> get_source;
 
     AttrAddition(int attr_id, float value)
     {
@@ -396,7 +397,11 @@ std::vector<std::string> Ability::GMShowAttrs()
                 AttrAddition* e = list_entry(pos,
                                              AttrAddition,
                                              list_entry);
-                data += "" + a8::XValue(e->value).GetString() + ",";
+                if (e->get_source) {
+                    data += "" + a8::XValue(e->value).GetString() + (*e->get_source)() + ",";
+                } else {
+                    data += "" + a8::XValue(e->value).GetString() + "<-none,";
+                }
                 ++i;
             }
             if (i > 0) {
@@ -531,3 +536,9 @@ bool Ability::HasDecAttr(int attr_id)
     }
     return false;
 }
+
+
+void Ability::SetSource(AttrHandle handle, std::shared_ptr<std::function<std::string()>> cb)
+{
+
+}
diff --git a/server/gameserver/ability.h b/server/gameserver/ability.h
index 067c4092..22788a68 100644
--- a/server/gameserver/ability.h
+++ b/server/gameserver/ability.h
@@ -29,6 +29,7 @@ class Ability
     void GMDelAttr(int attr_id,  int idx);
     void GMClearAttr();
     std::vector<std::string> GMShowAttrs();
+    void SetSource(AttrHandle handle, std::shared_ptr<std::function<std::string()>> cb);
 
 private:
     void Clear();