Redmine

I have 2 request:

1.Export selected issues form a list of issues shown in redmine, now either I select or unselect, all issues are exported.
2.Export subtasks info. from parent task, now it can not be exported.

If there is any plug-in to solve the requests, it will be very helpful.

Thanks a lot.

the picture I attach is here: http://www.redmine.org/boards/2/topics/44398