Hi
If your amount per bet number is always known, you could do it with a series of triggers updating a user variable with the amount.
Set User Variable, Name: amt, Value: 5.00 Condition: market’s number of matched back bets is equal to 0
Set User Variable, Name: amt, Value: 7.00 Condition: market’s number of matched back bets is equal to 1
Set User Variable, Name: amt, Value: 7.70 Condition: market’s number of matched back bets is equal to 2
Set User Variable, Name: amt, Value: 8.47 Condition: market’s number of matched back bets is equal to 3
etc.
Backing trigger amount: amt
You could also try a combination of the above for the first 2 bets and the 10% formula for the remainder
Set User Variable, Name: amt, Value: 5.00 Condition: market’s number of matched back bets is equal to 0
Set User Variable, Name: amt, Value: 7.00 Condition: market’s number of matched back bets is equal to 1
Set User Variable, Name: amt, Value: <10% formula> Condition: market’s number of matched back bets is equal or greater than 2