How to set an action?

Hi,
I want to link to a website (like www.google.com) when user click any cell in cube browser.

Then I set an action, the setting detail as following:
Target Type: Cells
Target Object: All Cells
Action Content Type: URL
Action expression: www.google.com

But it's not work fine. When I click any cell in cube browse there is an error message.

Is any problem in my setting detail? especially Action expression?

thanks,You should put double quotes around literal srings in the action expression, so:

"www.google.com"|||Thanks. I add double quotes to it. There is no error message.

But I click the cell, there is no response.
I thought the action would be open a browser and link to google.
Why the action is no any response?|||Try the full URL: "http://www.google.com", because certain safety options can block browsing if the URL doesn't start with "http://" or "https://"