Has my trigger fired in error here?

Still trying to fully understand triggers so am spending time going thru my logs. In this instance I'm sure my trigger fired when it shouldn't have.
I have used this for weeks and it hasn't misfired, any ideas why this has happened?
I should add that I also have similar triggers for the first two/three/and four favourites.
This one fired for the 4 favourite trigger but only backed two horses...
The trigger is:
All matching selections/all markets/once per market/idle or suspended
Selections rank is equal or less than 4
Fourth favourites prices is equal or less than 9
Fifth favourites prices is equal or greater than 18
Matched b_book is equal or less than 82


Here is the log:

14:24:19   Checking market "Horse Racing / AUS / Mack (AUS) 23rd Jul / 14:25 R3 1050m 3yo 23 Jul".
14:24:19   Checking condition and Selection's Rank is equal or less than 4.
14:24:19   Condition is: TRUE. valid for 2 selections: 3. Charcoal Melody, 4. Mister Booze.
14:24:19   Checking condition and Selection's Trigger Expression r_4_back_price is equal or less than 9.
14:24:19   Selection: 3. Charcoal Melody, initial expr.: r_4_back_price, intermediate: 7.00, final: 7.00.
14:24:19   Selection: 4. Mister Booze, initial expr.: r_4_back_price, intermediate: 7.00, final: 7.00.
14:24:19   Condition is: TRUE. valid for 2 selections: 3. Charcoal Melody, 4. Mister Booze.
14:24:19   Checking condition and Selection's Trigger Expression r_5_back_price is equal or greater than 18.
14:24:19   Selection: 3. Charcoal Melody, initial expr.: r_5_back_price, intermediate: 34.00, final: 34.00.
14:24:19   Selection: 4. Mister Booze, initial expr.: r_5_back_price, intermediate: 34.00, final: 34.00.
14:24:19   Condition is: TRUE. valid for 2 selections: 3. Charcoal Melody, 4. Mister Booze.
14:24:19   Checking condition and Selection's Trigger Expression match_b_book is equal or less than 82.
14:24:19   Selection: 3. Charcoal Melody, initial expr.: match_b_book, intermediate: 60.15, final: 60.15.
14:24:19   Selection: 4. Mister Booze, initial expr.: match_b_book, intermediate: 60.15, final: 60.15.
14:24:19   Condition is: TRUE. valid for 2 selections: 3. Charcoal Melody, 4. Mister Booze.
14:24:19   Selection: 3. Charcoal Melody, initial expr.: aus_balance * 0.5, intermediate: 1000.20*0.5, final: 500.10000000.

Hi,

Try adding a condition

And Selections trigger expression matching_number is equal to 3

or equal to 2 etc whatever you require it to be

thanks Larp, I willl add that but I was under the impression that it shouldn't be needed.
The other thing I don't get is that after the first ""error"", next time it checked the conditions it still only chose two horses, even tho clearly there were four horses whose rank equal or was less than 4.

Is it possible that it somehow got confused with my other trigger than specified rank equal or less than 2??? They were both operating on the same race.

Hi,

As far as I know,If the condition is set to Once Per Selection it may fire more than once with 2 selections now and 2 selections the next time. Best to put in the matching_number condition and it will only back when that number is correct.

The triggers will not overlap as a rule, unless there are so many contra-conditions that it is taking time to process them and perhaps either missing prices or betting late. Best to simplify the triggers as much as you can and have them in the correct order, perhaps split them to separate profiles. Or better yet, get one of the professionals with MfPro to do it for you under the Request A Trigger, private if you wish to pay the nominal fee.

larp