diff --git a/erp/expense/cost.go b/erp/expense/cost.go
index 8b126f2..811cd12 100644
--- a/erp/expense/cost.go
+++ b/erp/expense/cost.go
@@ -57,14 +57,18 @@ type ArgsCostAdd struct {
 	InvoiceSerial string          // 发票编号
 }
 
+type ReplyCostAdd struct {
+	CostId int64 `json:"costId"`
+}
+
 // Add @TITLE 添加
-func (c *cost) Add(ctx context.Context, args ArgsCostAdd) (err error) {
+func (c *cost) Add(ctx context.Context, args ArgsCostAdd) (reply ReplyCostAdd, err error) {
 	xClient, err := client.GetClient(c)
 	if err != nil {
 		return
 	}
-	reply := 0
-	return xClient.Call(ctx, "Add", args, &reply)
+	err = xClient.Call(ctx, "Add", args, &reply)
+	return
 }
 
 type ArgsCostEdit struct {