Hi
I have some thoughts, and post them as an idea only – not tested at all, and no idea if it will work.
Assuming you are backing
Remember Action after your Back Action in same trigger
remember name: e.g. concrete
remember selections bets
your choice of add to list or new list
Your second trigger
Conditions
selection’s name is equal to concrete_sel_name
selection's bu_backp is equal to concrete_bu_backp
(or selection’s new bet price is equal to concrete_bu_backp)
The above conditions should identify unmatched bets at bu_backp price. So if the above conditions were met, you would NOT execute your next trigger.
You can also look at bu_backid as a possible variable to use in your filtering.
Hope this helps
Btw something similar here, but with no solution I’m afraid
http://community.welldonesoft.com/triggered-betting-10/please-help-with-my-trigger/