Send email policy

Hi,

I am trying to use the Send Email policy.

When I configure it , in the subject, i would like a message like:
the asset has been moved from "this state" to "this state".
e.g:- the asset has moved from "submitted" to "In Review" state

How can i get the values "submitted" and "in review"?
I see 3 variables provided to me, and they are :

$(ram.asset.name): the name of the asset
$(ram.asset.version): the version number of the asset
$(ram.asset.url): the URL to the asset
Is there a way where I can get the state from which the asset is coming and to which the asset is going?
Thanks!

Regards,
Sripriya