[Click] How to develop the element running in nsclick?

[liang jiao]

Hi,all,
        I am developing new elements that can run in nsclick. I know how to
develop a new element in userlevel by add the declaration at the bottom of
 xx.cc like* "ELEMENT_REQUIRES(userlevel)". When I replace "userlevel" with
"nsclick" or "nslevel", new elements can't run in nsclick. Who can help me?*
*Best wishes,*
*Messi,*

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