diff --git a/models/workflow/workflow_mongo_accessor.go b/models/workflow/workflow_mongo_accessor.go
index f8d2f50..7f0f192 100644
--- a/models/workflow/workflow_mongo_accessor.go
+++ b/models/workflow/workflow_mongo_accessor.go
@@ -22,7 +22,7 @@ func New() *workflowMongoAccessor {
 	return &workflowMongoAccessor{}
 }
 
-func (wfa *workflowMongoAccessor) checkBooking(data *Workflow) bool {
+func (wfa *workflowMongoAccessor) CheckBooking(data *Workflow) bool {
 	accessor := (&workflow_execution.WorkflowExecution{}).GetAccessor()
 	s := data.Schedule.Start.Add(time.Duration(-10) * time.Second)
 	e := data.Schedule.Start.Add(time.Duration(10) * time.Second)
@@ -96,7 +96,7 @@ func (wfa *workflowMongoAccessor) execution(id string, realData *Workflow, delet
 	if r.Schedule.Start == realData.Schedule.Start && r.Schedule.End == realData.Schedule.End && r.Schedule.Cron == realData.Schedule.Cron {
 		return 200, nil
 	}
-	if !wfa.checkBooking(realData) {
+	if !wfa.CheckBooking(realData) {
 		return 409, errors.New("the booking is already taken.")
 	}
 	if delete {