How do i automated doubling up a lay with liablity

[horseplay]

hello, i'v been doubling up lay different sports but i dont want to have to stay up all night to do it , as i'm in Australia.

thinking bet angel will surely be able to do this, and do i need gaurdian to do it ?

i want to choose 3 sports and lay first one say 100 dollars it might be manchester at 1.40,

if that wins i want it to add 40 dollar loss plus the 100 to the next bet , so it would be 140 next lay , say it might be 1.50 next one so then my liabily would be 75 plus the 150 from the previous.

if 3 in a row win , i'll just take the loss and end it there.

is it difficult to double up 3 in a row bringing forward the liability?