diff --git a/package.json b/package.json
index 52444c2..d2342f8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "botlib",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "General Bot base library for building Node.js TypeScript Apps packages (.gbapp) and Libray packages (.gblib)",
   "main": "dist/index.js",
   "types": "dist/index",
@@ -45,4 +45,4 @@
     "typedoc": "0.14.2",
     "typescript": "3.4.5"
   }
-}
+}
\ No newline at end of file
diff --git a/src/IGBCoreService.ts b/src/IGBCoreService.ts
index b567f8d..118b0f8 100644
--- a/src/IGBCoreService.ts
+++ b/src/IGBCoreService.ts
@@ -43,8 +43,8 @@ import { IGBInstallationDeployer } from "./IGBInstallationDeployer";
 export interface IGBCoreService {
     sequelize: Sequelize
     syncDatabaseStructure()
-    loadInstances(): Promise<IGBInstance[]> ;
-    loadInstance(botId: string): Promise<IGBInstance> ;
+    loadInstances(): Promise<IGBInstance[]>;
+    loadInstance(botId: string): Promise<IGBInstance>;
     loadInstanceById(instanceId: number): Promise<IGBInstance>;
     initStorage(): Promise<any>;
     createBootInstance(core: IGBCoreService, installationDeployer: IGBInstallationDeployer, proxyAddress: string);
@@ -56,5 +56,6 @@ export interface IGBCoreService {
     saveInstance(fullInstance: any);
     loadAllInstances(core: IGBCoreService, azureDeployer: IGBInstallationDeployer, proxyAddress: string);
     openBrowserInDevelopment();
+    installWebHook(isGet: boolean, url: string, callback: any);
 
 }
\ No newline at end of file