attempt to green up

Okay,
I haven't explained it well.

Assume, in the 2.40 at Ascot, my trigger has backed "No Hope" in play at 2.20, 3.20 and 4.20 

I now want my "attempt to green up" trigger to fire at 2.00, 3.00 and 4.00.

Individually. for each back price. Preferably as they go into the market.

hi
this is not possible with the attempt to green up because the trigger calculates the back matched amount , so each time it would add the back matched amount then attempt to green up the new back matched amount making the green up bet amount larger than is required and the selection would make a loss if it won.