Changes the currently accessed server. 
Syntax:
call FSV-C-change-server using      l-server-name
                                    l-user-name
                                    l-server-password
Parameters:
| l-server-name | pic x(20). | 
| l-user-name | pic x(20). | 
| l-server-password | pic x(20). | 
 
On Entry:
| l-server-name | The name of the server | 
| l-user-name | The user ID | 
| l-server-password | The password associated with the user ID | 
 
Comments:
You need to set l-user-name and l-server-password only if you have Fileshare
security enabled.
The success of the call can be checked by examining RETURN-CODE. In the event
of a password error, the error message "Access Denied" is returned.