hi
sorry for the long delay, been ill.
here is your trigger
in the constants you can set
Bet amount
Minimum lay price
Price drop to, in one refresh
Tick difference between back and lay price
the trigger will place a back bet only if the price is around your set minimum price and the price in one refresh drops by the difference between your set minimum price and your set price drop.
so if you set minimum to 12 and price drop to 3, the difference is minus 9, so if the price leap/drop in one refresh is 9 or more and the difference between the back and lay price is within your set amount a bet will be placed.
please use test mode until you are happy with your settings
mcbee
download the trigger below