Hi ,
Whatever i mentioned in the previous requirement is for enabling the breadcrumb back button.
I never tried in this way try this link
http://scn.sap.com/thread/2111020
Make use of the method ON_HISTORY_TRIGGER. which is mentioned by Dario Matiz in the above post.
I am away from SAP now.. I will try that tomorrow and let you know.
Meanwhile if possible you just try to use the method ON_HISTORY_TRIGGER in DO_INIT of the overview page once.
Thanks & Regards,
DP.
.