diff --git a/samples/react-tenant-properties/src/webparts/tenantProperties/components/ITenantPropertyPanelProps.ts b/samples/react-tenant-properties/src/webparts/tenantProperties/components/ITenantPropertyPanelProps.ts
index f5c13e23f..7e7c37e63 100644
--- a/samples/react-tenant-properties/src/webparts/tenantProperties/components/ITenantPropertyPanelProps.ts
+++ b/samples/react-tenant-properties/src/webparts/tenantProperties/components/ITenantPropertyPanelProps.ts
@@ -1,5 +1,6 @@
 import {IListViewItems } from "./IListViewItems";
 import { WebPartContext } from '@microsoft/sp-webpart-base';
+import { SyntheticEvent } from "react";
 export enum panelMode {
  "New",
  "edit",
@@ -10,6 +11,6 @@ export interface ITenantPropertyPanelProps {
   mode:panelMode;
   showPanel: boolean;
   TenantProperty: IListViewItems ;
-  onDismiss(refresh?:boolean) : void;
+  onDismiss(ev?: SyntheticEvent<HTMLElement, Event>, refresh?: boolean) : void;
   context: WebPartContext;
 }
diff --git a/samples/react-tenant-properties/src/webparts/tenantProperties/components/TenantProperties.tsx b/samples/react-tenant-properties/src/webparts/tenantProperties/components/TenantProperties.tsx
index f74110329..548b412c6 100644
--- a/samples/react-tenant-properties/src/webparts/tenantProperties/components/TenantProperties.tsx
+++ b/samples/react-tenant-properties/src/webparts/tenantProperties/components/TenantProperties.tsx
@@ -19,6 +19,7 @@ import { MessageBar, MessageBarType } from 'office-ui-fabric-react/lib/MessageBa
 import { Spinner, SpinnerSize } from 'office-ui-fabric-react/lib/Spinner';
 import { WebPartTitle } from "@pnp/spfx-controls-react/lib/WebPartTitle";
 import * as strings from 'TenantPropertiesWebPartStrings';
+import { SyntheticEvent } from 'react';
 
 // ListView Columns
 const viewFields: IViewField[] = [
@@ -97,7 +98,7 @@ export default class TenantProperties extends React.Component<ITenantPropertiesP
   }
   // Panel Dismiss CallBack
   // @param refresh refresh list?
-  public async onDismissPanel(refresh?: boolean) {
+  public async onDismissPanel(ev?: SyntheticEvent<HTMLElement, Event>, refresh?: boolean) {
     this.setState({
       showPanel: false
     });
diff --git a/samples/react-tenant-properties/src/webparts/tenantProperties/components/TenantPropertyPanel.tsx b/samples/react-tenant-properties/src/webparts/tenantProperties/components/TenantPropertyPanel.tsx
index 909bf35b9..83fbaa9ed 100644
--- a/samples/react-tenant-properties/src/webparts/tenantProperties/components/TenantPropertyPanel.tsx
+++ b/samples/react-tenant-properties/src/webparts/tenantProperties/components/TenantPropertyPanel.tsx
@@ -58,7 +58,9 @@ export default class TenantPropertyPanel extends React.Component<ITenantProperty
             Description: this.state.tenantProperty.tenantPropertyDescription,
             Comment: this.state.tenantProperty.tenantPropertyComment
           });
-          result ? this.props.onDismiss(true) : null;
+          if (result) {
+            this.props.onDismiss(null, true);
+          }
         }catch(error){
           this.setState({errorMessage:error});
         }
@@ -72,7 +74,9 @@ export default class TenantPropertyPanel extends React.Component<ITenantProperty
             Description: this.state.tenantProperty.tenantPropertyDescription,
             Comment: this.state.tenantProperty.tenantPropertyComment
           });
-          result ? this.props.onDismiss(true) : null;
+          if (result) {
+            this.props.onDismiss(null, true);
+          }
         }catch(error){
           this.setState({errorMessage:error});
         }
@@ -86,7 +90,9 @@ export default class TenantPropertyPanel extends React.Component<ITenantProperty
             Description: this.state.tenantProperty.tenantPropertyDescription,
             Comment: this.state.tenantProperty.tenantPropertyComment
           });
-          result ? this.props.onDismiss(true) : null;
+          if (result) {
+            this.props.onDismiss(null, true);
+          }
         }catch(error){
           this.setState({errorMessage:error});
         }