diff --git a/main.go b/main.go
index 74ef8cd..28b2c79 100644
--- a/main.go
+++ b/main.go
@@ -12,6 +12,7 @@ import (
 	"github.com/supanadit/geo-smart-system/model/tile38"
 	"log"
 	"net/http"
+	"strings"
 )
 
 func main() {
@@ -86,7 +87,8 @@ func main() {
 		hookID := "HOOK-" + xid.New().String()
 		fmt.Printf("Set HOOK with ID : %s \n", hookID)
 		hookURL := "http://192.168.99.1:" + port + "/detection/call"
-		client.Do("SETHOOK", hookID, hookURL, "NEARBY", detection.Type, "FENCE", "DETECT", "enter", "COMMANDS", "set", "POINT", detection.Lat, detection.Lng)
+		trigger := strings.Join(detection.TriggerType, ",")
+		client.Do("SETHOOK", hookID, hookURL, "NEARBY", detection.Type, "FENCE", "DETECT", trigger, "COMMANDS", "set", "POINT", detection.Lat, detection.Lng)
 		var status map[string]interface{}
 		var httpStatus int
 		if err != nil {
diff --git a/model/detection.go b/model/detection.go
index 8ac7395..e7f7d32 100644
--- a/model/detection.go
+++ b/model/detection.go
@@ -1,18 +1,17 @@
 package model
 
-type Trigger string
-
+// Trigger Type
 const (
-	inside  Trigger = "inside"  // when an object is inside the specified area
-	outside Trigger = "outside" // when an object is outside the specified area
-	enter   Trigger = "enter"   // when an object that was not previously in the fence has entered the area
-	exit    Trigger = "exit"    // when an object that was previously in the fence has exited the area
-	cross   Trigger = "cross"   // when an object that was not previously in the fence has entered and exited the area
+	inside  string = "inside"  // when an object is inside the specified area
+	outside string = "outside" // when an object is outside the specified area
+	enter   string = "enter"   // when an object that was not previously in the fence has entered the area
+	exit    string = "exit"    // when an object that was previously in the fence has exited the area
+	cross   string = "cross"   // when an object that was not previously in the fence has entered and exited the area
 )
 
 type Detection struct {
-	Type        string    `json:"type"`
-	Lat         string    `json:"lat"`
-	Lng         string    `json:"lng"`
-	TriggerType []Trigger `json:"trigger_type"`
+	Type        string   `json:"type"`
+	Lat         string   `json:"lat"`
+	Lng         string   `json:"lng"`
+	TriggerType []string `json:"trigger"`
 }