after searching number of CWM injecting possibilities,
i found a method an automatic CWM building website
the procedure is, u have to upload stock recovery image of device(grand 2 in our case)
and upload extra files(optional) related to recovery.
then our uploaded file will be queued...
there will be a progressbar shown about the completion of building recovery.
once it gets completed then there are number of files shown including the builded CWM recovery
(unfortunately i can't download them due to my internet issues)
so please someone try this method..
thanks in advance