Quiet reader, first time poster here


I want to automate the following sequence but I keep failing.
Let's assume the following scenario. Market is not in-play and there are only 2 outcomes, one of the two teams wins (no draw). The last traded price on the favorite was 1.40, the current back price is 1.40, the lay is 1.41. I don't have any positions in the market yet.
Now I put in an order to lay the fav @ 1.38 for 1000e. My order is the first one at that price in the order book (and therefore will be traded first). My liability is of course 380e.
I expect prices to drop around 1.38. The moment the price reaches that level, a part (or even the whole) of my lay order will be traded (as my order was first in line) and I want to automate Betangel to put in a back order 1-2 ticks higher. The back bet has to be the same volume as the amount traded at 1.38, with a maximum of 1000e.
Thanks if you made it that far reading

Betangel keeps track of the volume at each price, so in theory the formula should be simple: If price reaches X or lower, place back bet at X+1 tick using the total traded volume at price X or lower, with the maximum back bet equal to the my max liability.
Yet I fail to make this work in the Betguardian Automation section. My current automate setup is this:
Just 1 rule:
Conditions: Rule type: Place back bet, triggers starts 23 hours before event (Btw, is it possible to make 2-3 days triggers?), Repeat trigger 10 times, each 100 seconds.
Parameters:
Place at Fixed price: Odds: 1.39
Stake: Fixed amount - 100e (this should be a variable amount – but how to change this?)
Global settings: none?
Conditions: Type: Fixed odds, Last traded price is less than 1.39.
I tried using volume as a condition, but I can choose only the total volume of the selection or the market, instead of the volume traded at a certain price. I just can't find a way to “tell” Betangel to place a back bet only for the amount that has been traded from my first order.
Sorry for my bad English, I really would appreciate if someone could point me in the right direction. Can this be done in Betangel, should I try to remember my Excel skills or is simply not possible?
Greetings,
Geralt.