How to configure JIRA_HOME?

How to configure JIRA_HOME? I'm getting an error:

Configured jira.home '/Users/codedroid/Downloads/atlassian-jira-5.1-standalone' must not be a parent directory of the webapp servlet path '/Users/codedroid/Downloads/atlassian-jira-5.1-standalone/atlassian-jira'

Changed it and now I get this:

Configured jira.home '/Users/codedroid/Downloads/atlassian-jira-5.1-standalone/atlassian-jira' must not be the same as the webapp servlet path '/Users/codedroid/Downloads/atlassian-jira-5.1-standalone/atlassian-jira'

Solution

Have a look in here, if you're still having troubles please write what did you set JIRA_HOME to be and where did you defined it, thanks.

EDIT

Yea, that documentation is more of 'how to' instead of 'what'. A better explanation of what the JIRA_HOME should be is writen in more details here.

Anyway, if you feel that the documentation are confusing or just bad, you could do everyone a favour and write it at the bottom of the page, under comments, so other could see it easily.