Thanks mcbee. Of course, I hope this helps below...
The trigger I had attached runs against GBR & IRL Horse WinMarkets & triggers a back bet at r_ticks(lay_price,0) when these conditions are met = <40 secs to scheduled start time & >= 5 runners & 4th fav price is [> price 1 & < price 2]
(I was originally using r_ticks(lay_price,4)
The bet size varies according to bands and uses a set of nested IF statements to select stake % at bet trigger.
The change I'm looking to make is... instead of placing the bet, when these conditions are met, record the original price, if the in-play price drops by x ticks (say 10) from this, place a bet at the % stake for the original price.
I've been just browsing the recent posts on momentum scalping - and wondering if the condition I need is "Backs Ticks Diff" one - although I'm not sure if this is a "drop" difference or a difference in price on any direction.
Thank you again for all your help with this - James