[Inf-IT DAVcl] Baikal server + caldavzap

Hello,

I'm using Baikal as a caldav server successfully with thunderbird/lightning where the calendar address is set to

http://my.server.com/cal.php/calendars/myname/default

My problem is when I want to start using caldavzap. I cannot figure out, how to set values in config.js - when I try to login the login screen appears again. Can somebody point me, how I can debug login access with caldavzap? Maybe some logging in apache?

I already tried http://my.server.com/cal.php/principals/ as a href in config.js with no success.

Thanks in advance