[TR] soccer trigger

Hi could you make me a trigger for soccer please?
back on the 0-0 correct score min and max prices as a constant
green on minutes gone as a constant
after x amount of minutes gone in game i want to lay the current score for the amount of green as the liability as a constant
for example i have £15 green from the 1st bet my liability will be £15 for laying current score or if £10 green then my liability is £10 
if the original 0-0 is lost then no lay on the current score
 Thanks Andrew