Change sender of RTM email?

[mbooth]

I'd like to change the sender of the RTM email, so that our moderators can simply hit reply in their email client to thank whoever has reported the post.
However, it defaults to the webmaster email.

I'd like to set it to the email of the person reporting the post.

I see this is possible within the vbmail() function as an optional argument, and from what I think I understand, it's on line 380 of class_reportitem.php where I would need to pass this argument to the function.

Am I right? If so, how would I pull this field/info from the correct array on the forum and pass it to vbmail()?