Android : Sencha cmd 5 , No such command "app package"

I am following this tutorial : http://docs-origin.sencha.com/touch/2.3.2/apidocs/#!/guide/native_packaging-section-additional-resources

when I run the command

sencha app package build android.json

I get this error :

Sencha Cmd v5.0.2.270
[ERR] Unknown command: "package"

Anyone have an idea what's the problem please.