Acting on Pressure of Money (high Lay volume vs low Back volume)
We'll back on any selection in the given price range whose LAY volume is 2 or more times as much as BACK volume.
For example, you can see on the screenshot below that the back volume of selection The Stig is equal to 6.4 + 19.8 + 49.7 = 75.9, whereas the lay volume is equal to 28.6 + 38.2 + 260 = 326.8. That's 4.3 times higher, so the bet has been placed.
The trigger is very simple: it compares the "Lay Volume" parameter of the selection with its back_volume trigger variable.
There is a constant named max_price for specifying the maximum price of the qualifying selection. You can also set the ratio of lay and back volume through the constant named mult.