I've spend all morning on it trying all sorts of options but keep hitting the same problem.
Step 1 is to place a back bet with it offset once the back bet gets matched (using fill or kill ) .
Once the corresponding lay bet gets matched step 1 should kick in again and place a back bet (repeat scalp) .
I have a condition of "Number of unmatched bets " set to 0 so it should only fire when lay bet is fully matched .
However , it seems in the time between the back bet getting matched and the lay bet getting placed another back bet is getting place as the unmatched condition is being met.
I've tried only firing once and having multiple rules along with all sorts of what I thought were clever ideas , every time I thought of a way I patted myself on the back for being a genius only to find out they were all flawed.
I've also trawled through the forum but keep hitting the same problem.
I'm sure the answer is really simple but I can't see it , I will have no hair left shortly

Can anyone give me a sample or point in the right direction - thanks