diff --git a/comps/md/MasterDetail.tsx b/comps/md/MasterDetail.tsx
index ef8858f..e2a4107 100755
--- a/comps/md/MasterDetail.tsx
+++ b/comps/md/MasterDetail.tsx
@@ -12,6 +12,7 @@ import {
 } from "./utils/md-hash";
 import { mdRenderLoop } from "./utils/md-render-loop";
 import { MDLocalInternal, MDProps } from "./utils/typings";
+import { any } from "zod";
 
 export const MasterDetail: FC<MDProps> = (arg) => {
   const {
@@ -38,6 +39,8 @@ export const MasterDetail: FC<MDProps> = (arg) => {
       breadcrumb: [],
       internalRender() {},
       render: () => {},
+      master: { prefix: null, suffix: null },
+      child: { prefix: null, suffix: null },
     },
     selected: null,
     tab: {
diff --git a/comps/md/utils/typings.ts b/comps/md/utils/typings.ts
index 08c00dc..2126c6d 100755
--- a/comps/md/utils/typings.ts
+++ b/comps/md/utils/typings.ts
@@ -41,6 +41,8 @@ export type MDLocalInternal = {
     breadcrumb: BreadItem[];
     internalRender: () => void;
     render: () => void;
+    master: { prefix: any; suffix: any };
+    child: { prefix: any; suffix: any };
   };
   actions: MDActions;
   selected: any;
@@ -105,6 +107,8 @@ export const MasterDetailType = `const md = {
       url?: string;
       onClick?: () => void;
     }[]
+    master: { prefix: any; suffix: any };
+    child: { prefix: any; suffix: any };
   };
   actions: (
     {