Is it possible to replicate the following scenario or something very similar?
Lay a selection at the start of the race, if the price shortens during the race place a sufficiently increased back bet to create a potential greenup situation then use the Unequal Greenup Profit to a position were in the selection goes on to win the p/l will be 0 [or the minimum] and if the selection loses the p/l will be the majority of the potential greenup profit
Lay a selection for £10.00 at a price of 21 giving a potential liability for £200
If the price shortens to 11 back the selection for £22.00 to return the potential liability +10%
Greenup using the Unequal Profits bias so that 99% of the potential 10% greenup goes on to the Lay side. If the selection wins then only one per cent of the potential 10% greenup
The constants should include the option of using fixed liability and percentages for the variables.