LDN - Luminis Developer Network

I created a fragment and owner id is dlmf_42. I try to login with dlmf_42 as username and frag.pwd as default password, but I got Username and Password not found error message.
Why?

If I create a simple jsp with login and password entries, how can these credential from the web page to zimbra for authenticaton?
Thanks!

Does any body knows what Banner form I can use to change paticular user's couse information, because I want to check the updates go through to luminis by the event. Thansks

Thanks!

If I create an access group, how can I assign an "edit user role permission" to that group?

If I create a channel, it may implement IChannel or IController interface, we can get the response data by using session objectis, but is there any body know any other way to get the response data, which is not througth session object, I hope I can use response object like response.write(....), because my jsp need to get the response data from xml file.

I am going to create a channel, it should get channel input data, calculate the input data, then display the result in the same channel, the submit button should just refresh the channel, not the whole page.

Which is the best channel type I should use?

Actually I created one by using jsp model II, every thing looks good, there has only one concern is the submit button, which now inferences the whole page instead of just channel.

Thanks!