diff --git a/README.md b/README.md
index 6716e39..07c2090 100644
--- a/README.md
+++ b/README.md
@@ -3,18 +3,24 @@ CM CMake module file
 
 ## use
 
- - create root project
+ - create a project
  - run "git submodule add https://github.com/hyzboy/CMCMakeModule" in project root directory.
  - run "git submodule add https://github.com/hyzboy/CMCore"
+ - run "git submodule add https://github.com/hyzboy/CMPlatform"
  - add the following code to project CMakeLists.txt
 ``` 
+   cmake_minimum_required(VERSION 3.0)
+   
+   project(SampleProject)
+   
    set_property(GLOBAL PROPERTY USE_FOLDERS ON)
   
    set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/CMCMakeModule)
   
-   #include(math)
-   #use_mgl(${CMAKE_CURRENT_SOURCE_DIR}/3rdpty/MathGeoLib)
+   include(math)
+   use_mgl(${CMAKE_CURRENT_SOURCE_DIR}/3rdpty/MathGeoLib)
   
    include(use_cm_module)
    use_cm_module(Core)
+   use_cm_module(Platform)
 ```