diff --git a/history/helper.go b/history/helper.go
index da97d2a..d4a517b 100644
--- a/history/helper.go
+++ b/history/helper.go
@@ -38,3 +38,7 @@ func (h *History) Iss(issuer string) *History {
 	h.Issuer = issuer
 	return h
 }
+func (h *History) Grp(grp string) *History {
+	h.Group = grp
+	return h
+}
diff --git a/history/history.go b/history/history.go
index 12205e8..7f5797c 100644
--- a/history/history.go
+++ b/history/history.go
@@ -29,6 +29,7 @@ type History struct {
 	Message string
 	Body    interface{} `gorm:"-"`
 	Issuer  string
+	Group   string
 
 	BodyJson string
 }