[Building Sakai] How to register a new function and make it effective?

[Shun Zhang]

I'm now developing an app based on sakai 2.8.0. I want to make my tool
hidden to student and visiable to teacher, so I do the following
steps, but it doesn't work:

1. register new fuctions in registration xml (I don't want to use the
existed "content.new" function).
<registration>
    <tool id="aid201105.questionpool" title="Question Pool" description="">
        <category name="course" />
        <configuration name="functions.require"
value="aid201105.questionpool.new" />
    </tool>
    <function name="aid201105.questionpool.new" />
    <function name="aid201105.questionpool.read" />
    <function name="aid201105.questionpool.revise" />
    <function name="aid201105.questionpool.delete" />
</registration>

2. authorize

Admin's workspace --> Reams --> Edit: Realm !site.template.course -->
Set the Functions for Role "Instructor" --> check
"aid201105.questionpool.new"

3. then I login and enter a course site as an instructor, but I can
not see "Question Pool" tool on the left hand menu.

   And securityService.unlock(userId, "aid201105.questionpool.new",
siteService.siteReference(siteId)) returns false.


I'm confused now.

Thanks!