Hi martin.
the goal would be to monitor the difference between the two last traded prices and if this difference is greater than say 0.5. e.g price falling from 2.00 to 1.49 then back.
In my mind it is the same as the 'back price dif over' expression, but the last traded price would be used instead of the back price. The back price for me is an unrealiable indicator of price movement.
the monitoring of the last traded price would be in the region of say each one every 5 secs.
Do you think monitoring the variables once would be the better option or to find a way to get them to repeat independently every 5 secs (thats what im struggling with at present - when the variables reach the same time elapsed, 5secs, 10secs whatever, the same price is returned) for both variables.
hope that makes sense..