Problem Solved: adding Google calendars in Evolution - “Forbidden”

Many of us at some time wanted to sync Google calendar with his Linux operating system using Evolution-calendar but then he faces this problem :

Well, that problem will no more occur 

This is what you should do:

• First go to evolution app 

• Go to new calendar and from popup chose caldav method instead of Google
• In the url field use:
  https://www.google.com/calendar/dav/YOURUSERNAME@gmail.com/events.
• Use your full user name for both username & email. Then click on find calendars. Enter your password.
• Select the desired calendar & click apply. It will appear in evolution.
• Repeat above steps for other calendars.

DONE!