Record producer variable editor fields audit

[harish mandhula]

I am using variable editor method in backend to get the record producer variables.
so i want here when i changed the varaible values in backend, that should be stored in Additional comments which is under Activities section.

so like that i need variable audit history should be store in additional comments,.
To implement this i have  followed the option 2 in below link process, i have done all with that.
https://www.servicenow.com/community/in-other-news/requested-item-variables-in-activity-formatter/ba...

But here i am getting error by creating BR on req table, and the variable audit history was not storing additional comments.

can anyone let me help on this.

[Uncle Rob]

Are any of your objects in different scopes from each other?   That's what the error appears to be telling you.

Also, the intent of Additional Contents is to communicate with requestor.  Does the requestor actually want an update on every variable value change?