How to add event parm1 and/or event parm2 to the message content in the sys_notification record?

[kushagrasingh]

Hi everyone,
I want to send notification whenever the assgined_to field value changes, to the previous as well as the current user.
I have written a BR which will trigger an event and when the event will be triggered a notification will be sent out to the event parm1 and event parm2. 
In the message content I want to add/show the previous user as well as the current user. i was trying to reach event parm1/parm2 in the message content but it was not working.
Can we do this? or is there any other way to get the users in the notification message content?

[yuvarajkate]

Can you share the BR? To see if something is missing over there.

[Ankur Bawiskar]

@kushagrasingh 

this link has solution, please enhance

Send email to previous Assigned to when Assigned to changes 

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