This command sets the working area and project for the current user.
http://www.myserver.com/evj/ExtraView/ev_api.action?
user_id=username
&password=password
&statevar=set_area_proj
&area_id=nnn1
&proj_id=nnn2
[&access_token=token-value]
Both the area_id and the project_id must exist, else the command will fail.
The proj_id must be valid within the area_id, else the command will fail.
The optional access_token parameter allows you to use a valid OAuth2 token obtained with the get_token command. If you provide the access_token parameter, then the user_id and password parameters should not be provided. This prevents the password being sent in clear text over your network connection.
