Limiting the liability of a bet BetFair betting bot - MarketFeeder Pro - triggered automated betting software

In this article we are going to show how to place a bet whose liability does not exceed the specified limit, using a trigger.

For example, I want to lay 10% of my bank on the third favourite, but only if the total liability of my bet does not exceed £100.

Let's take a look at this market:

Here the third favourite is "Pallantes Cross". Suppose, my bank is £200, so I want to lay £20 on this selection. To find out the possible liability of the bet I right-click on the lay button of this selection and enter the amount of the stake into the appropriate text field:

The program shows that the liability will be -£152. That is more than £100, so how do I create a trigger that will lay to the maximum liability of £100?

First of all, I'll add a trigger that defines the size of my bet:

The formula says:

0.1*IF(test_mode=1, test_balance, balance)

I created a user variable called my_bet, to make the further calculations easier. This way I tell the program to take 10% of the test balance, if Test Mode is turned on, or the real balance, if Test Mode is turned off.

Now I'll add the second trigger:

The formula says:

IF(my_bet*(lay_price-1) > 100, 100/(lay_price-1), my_bet)

What does it mean? As you know, the liability of a lay bet is calculated as (stake size)*(lay price - 1). In this case the size of the stake is stored in the variable my_bet, so the liability of the bet is:

my_bet*(lay_price-1)

The formula therefore checks if the liability is greater than £100. If it is, it lays 100/(lay_price-1). This way the liability of the bet will be exactly £100.

If it is not greater than £100, then it simply bets the intended stake size.

I'll set my test bank to £200 and run the triggers.

The trigger limited the liability to £100 (the 0.03 fraction appears because of rounding errors). The stake size was calculated automatically.

Now I'll reduce my bank to £50 and will repeat the trigger.

While I was creating this example, the third favourite changed to "Invincible Prince". Since 10% of the bank make £5, and the liability of the bet does not exceed £100, the program placed £5 at 7.2.

Right-click here to download the trigger file.

Note: you can set the minimum size of the bet to avoid laying below the allowed minimum. To do this, add the following conditions to the trigger:

Here it is supposed that £2 is the minimum bet size, and £100 is the maximum liability.

Change any of these fields to whatever you want.

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