diff --git a/hook.go b/hook.go
index 94a2983..813987e 100644
--- a/hook.go
+++ b/hook.go
@@ -2,6 +2,7 @@ package engine
 
 import (
 	"context"
+	"reflect"
 	"sync"
 )
 
@@ -21,7 +22,7 @@ const (
 var Hooks = make(map[string]*RingBuffer)
 var hookLocker sync.Mutex
 
-func AddHooks(hooks map[string]func(interface{})) {
+func AddHooks(hooks map[string]interface{}) {
 	hookLocker.Lock()
 	for name, hook := range hooks {
 		rl, ok := Hooks[name]
@@ -30,9 +31,13 @@ func AddHooks(hooks map[string]func(interface{})) {
 			rl.Init(4)
 			Hooks[name] = rl
 		}
-		go func(hooks *RingBuffer, callback func(interface{})) {
+		go func(hooks *RingBuffer, callback interface{}) {
+			vf := reflect.ValueOf(callback)
+			if vf.Kind() != reflect.Func {
+				panic("callback is not a function")
+			}
 			for {
-				callback(hooks.Read())
+				vf.Call(hooks.Read().([]reflect.Value))
 				hooks.MoveNext()
 			}
 		}(rl.Clone(), hook)
@@ -40,7 +45,7 @@ func AddHooks(hooks map[string]func(interface{})) {
 	hookLocker.Unlock()
 }
 
-func AddHook(name string, callback func(interface{})) {
+func AddHook(name string, callback interface{}) {
 	hookLocker.Lock()
 	rl, ok := Hooks[name]
 	if !ok {
@@ -49,12 +54,16 @@ func AddHook(name string, callback func(interface{})) {
 		Hooks[name] = rl
 	}
 	hookLocker.Unlock()
+	vf := reflect.ValueOf(callback)
+	if vf.Kind() != reflect.Func {
+		panic("callback is not a function")
+	}
 	for hooks := rl.Clone(); ; hooks.MoveNext() {
-		callback(hooks.Read())
+		vf.Call(hooks.Read().([]reflect.Value))
 	}
 }
 
-func AddHookWithContext(ctx context.Context, name string, callback func(interface{})) {
+func AddHookWithContext(ctx context.Context, name string, callback interface{}) {
 	hookLocker.Lock()
 	rl, ok := Hooks[name]
 	if !ok {
@@ -62,19 +71,27 @@ func AddHookWithContext(ctx context.Context, name string, callback func(interfac
 		Hooks[name] = rl
 	}
 	hookLocker.Unlock()
+	vf := reflect.ValueOf(callback)
+	if vf.Kind() != reflect.Func {
+		panic("callback is not a function")
+	}
 	for hooks := rl.Clone(); ctx.Err() == nil; hooks.MoveNext() {
-		callback(hooks.Read())
+		vf.Call(hooks.Read().([]reflect.Value))
 	}
 }
 
-func TriggerHook(name string, payload interface{}) {
+func TriggerHook(name string, payload ...interface{}) {
+	args := make([]reflect.Value, len(payload))
+	for i, arg := range payload {
+		args[i] = reflect.ValueOf(&arg).Elem()
+	}
 	hookLocker.Lock()
 	defer hookLocker.Unlock()
 	if rl, ok := Hooks[name]; ok {
-		rl.Write(payload)
+		rl.Write(args)
 	} else {
 		rl = NewRingBuffer(4)
 		Hooks[name] = rl
-		rl.Write(payload)
+		rl.Write(args)
 	}
 }
diff --git a/stream.go b/stream.go
index 452263e..23580df 100644
--- a/stream.go
+++ b/stream.go
@@ -135,9 +135,9 @@ func (r *Stream) Subscribe(s *Subscriber) {
 		s.Context, s.cancel = context.WithCancel(r)
 		r.subscribeMutex.Lock()
 		r.Subscribers = append(r.Subscribers, s)
+		TriggerHook(HOOK_SUBSCRIBE, s, len(r.Subscribers))
 		r.subscribeMutex.Unlock()
 		utils.Print(Sprintf(Yellow("%s subscriber %s added remains:%d"), BrightCyan(r.StreamPath), Cyan(s.ID), Blue(len(r.Subscribers))))
-		TriggerHook(HOOK_SUBSCRIBE, s)
 	}
 }
 
@@ -147,14 +147,15 @@ func (r *Stream) UnSubscribe(s *Subscriber) {
 		var deleted bool
 		r.subscribeMutex.Lock()
 		r.Subscribers, deleted = DeleteSliceItem_Subscriber(r.Subscribers, s)
-		r.subscribeMutex.Unlock()
 		if deleted {
 			utils.Print(Sprintf(Yellow("%s subscriber %s removed remains:%d"), BrightCyan(r.StreamPath), Cyan(s.ID), Blue(len(r.Subscribers))))
-			TriggerHook(HOOK_UNSUBSCRIBE, s)
-			if len(r.Subscribers) == 0 && r.AutoUnPublish {
+			l := len(r.Subscribers)
+			TriggerHook(HOOK_UNSUBSCRIBE, s, l)
+			if l == 0 && r.AutoUnPublish {
 				r.Close()
 			}
 		}
+		r.subscribeMutex.Unlock()
 	}
 }
 func DeleteSliceItem_Subscriber(slice []*Subscriber, item *Subscriber) ([]*Subscriber, bool) {