Thanks 
but we got one more problem with this, when we try to select a record in the interaction historty we are getting error - " Dynamic navigation to this object is not supported"
Through Debugging there is a class CL_CRM_UI_OBJECT_MAPPING_SRV=>CL_CRM_UI_OBJECT_MAPPING_SRV in which they are checking the Object name as BTOrder but in my case the OBject name is BTQResCuHist since the Object name doesnt match its not passing the navigation.
Basically its checking for Root which should be BTOrder but its getting BTQResCuHist.
Is there a way we can read the root node and set it as Object name. Let me know if you can help in this regard.
Thanks,
Priya.