From 776711cc2aa02bd9ffc46664998293d87804585a Mon Sep 17 00:00:00 2001
From: HarveyMac <harvey.chou@origtek-mail.com>
Date: Sun, 6 Nov 2022 15:17:30 +0800
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---
 src/app/app.module.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/app/app.module.ts b/src/app/app.module.ts
index 304f9ba..a37a628 100644
--- a/src/app/app.module.ts
+++ b/src/app/app.module.ts
@@ -9,7 +9,8 @@ import { OrderDiscountService } from './order-discount.service';
 @NgModule({
   imports: [BrowserModule, FormsModule],
   declarations: [AppComponent],
-  providers: [{ provide: OrderService, useClass: OrderDiscountService }],
+  providers: [{ provide: OrderService, useExisting: OrderDiscountService },OrderDiscountService],
+
   bootstrap: [AppComponent],
 })
 export class AppModule {}