Webdynpro for abap: my cProjects enhancement post-exit is not working?

I enhanced this WD 'DPR_PROJECTS_VIEW' View'VI_PROJECTS_VIEW'.
created a post-exit in method 'MODIFY_BREADCRUMB', but it is not working.
the post-exit is not run.
May I know the reason? What should I do?

Hi Duan,
just to take care of the simple things first - Have you activated the enhancement? (I'm sure you have!) have you put in a breakpoint in the modify_breadcrumb method to see that it is being called at all?
Is it possible that the method is returning/exiting before your enhancement gets processed?
Cheers,
Chris

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