Matched back price condition help please

Hi,
Can you please assist with a condition that will record back price of trigger when another trigger fires. I would like to bet when price is x ticks higher than recorded price.
example:  using a 5 tick increase
18:30:10 Trigger A   Back   1.80   5.00
18:30:10 Trigger B             2.20  (record price)

18:30:49 Trigger B  Back    2.30  =  5 tick increase  (2.30-2.20)
Can this be achieved without using index ?
Thanks
R

Bumping this up please. Would be nice to know if this is possible to do.