Selective Auto Action Email for various Activity

I've got all current versions of CB, Auto Actions, and Activity.

But I'm using Activity in multiple ways to do multiple things... essentially, multiple streams. This is on an intranet where vendors are applying for a booth at a craft fair. We have fair staff.

1. Vendors have a "Vendor Support Channel" to post questions to staff. Staff get an email (Auto Actions). Field type "Activity".
2. Staff have a restricted "Vendor Questions" tab that show questions from all vendor "Vendor Support Channel" streams. Field type "Activity".
3. We have a "Staff Notes" tab on each vendor profile for staff to keep private/confidential notes for each vendor. Field type "Comment".

When staff respond to vendor questions, an Auto Action email is sent to the vendor.

All is well, except "Staff Notes" is triggering the notification emails for 1 and 2. The Auto Action triggers for #1 and #2 are activity_onAfterCreateComment and activity_onAfterCreateStreamComment.

Is there a way to divide or separate out activity on 1 and 2 from activity on 3. I don't want notifications to go for "Staff Notes".

I had to scour the forum to find out about [var2_user_id] to send to the vendor when staff posted a reply. Is there a way to detect an activity field ID or something to use in an Auto Action condition?

I'm thinking it's going to tie in with Assets; there's not much info on all the options yet. Asset: profile.%.field.84 or similar?

Asset is the only thing determining location for an activity or comment. So you'll want to be sure the asset you're using for your extra streams is unique enough that you can filter it out. If it's an activity field then it probably has an asset of profile.USER_ID.field.FIELD_ID. In CB Auto Actions you'll need to use REGEXP to condition against it so something like the below should work fine.

[var3_asset] Is REGEXP /profile\.\d+\.field\.FIELD_ID_HERE/

Be sure to replace FIELD_ID_HERE with the field if of your comment field (#3). That should prevent comments from #1 and #2 from sending that notification. Additionally see the below for the variables available to the comment create/upgrade triggers.

activity_onAfterUpdateStreamComment
var1 = stream object
var2 = source object (likely the activity or field object in this case)
var3 = comment object
var4 = previous comment object (before updates applied)

activity_onAfterCreateStreamComment
var1 = stream object
var2 = source object (likely the activity or field object in this case)
var3 = comment object