diff --git a/premake5.lua b/premake5.lua
index 8733fa36..6b102c27 100644
--- a/premake5.lua
+++ b/premake5.lua
@@ -55,9 +55,11 @@ project "GLFW"
 		}
 
 	filter "configurations:Debug"
-		runtime "Debug"
-		symbols "on"
+		defines "SANDBOX_DEBUG"
+		buildoptions "/MT"	--it uses multithread, static version of the run-time library.[MDd]
+		symbols "On" -- it allows us to debug code. line by line. which the exe contain suppoting elements to debug.
 
 	filter "configurations:Release"
-		runtime "Release"
-		optimize "on"
+		defines "SANDBOX_RELEASE"
+		buildoptions "/MT"	--it uses multithread, static version of the run-time library.[MDd]
+		optimize "On" -- remove all the debuging datas.