Sign in apk is not working

[SivaramNalliboyana]

I have a created a app and want to publish it into playstore. While following this apk sign in article https://github.com/kivy/kivy/wiki/Creating-a-Release-APK
.I did everything mentioned there but when I run buildozer -v android release I am getting the error that the P4A_KEYSTORE ,P4A_KEYSTORE_PASSWD etc is missing . Here are the steps I die

1. $ mkdir -p ~/keystores/
   $ keytool -genkey -v -keystore ~/keystores/example.keystore -alias example -keyalg RSA -keysize 2048 -validity 10000
2. Then it asked me passwords and I typed kivysignin(it is a fake passwd)
   3.I exported the variables
   $ export P4A_RELEASE_KEYSTORE=~/keystores/example.keystore
   $ export P4A_RELEASE_KEYSTORE_PASSWD=kivysignin (the fake password which I gave in step 2)
   $ export P4A_RELEASE_KEYALIAS_PASSWD=kivysignin
   $ export P4A_RELEASE_KEYALIAS=example
3. then I cd into my folder and ran sudo buildozer -v android release

YAh then I got the errors that the variables which were exported were missing. I ran everything in one terminal

[SivaramNalliboyana]

I did it, used another way