Back/Lay price gap criteria

I couldnt find this...

How do I set criteria that will only place a bet if price gap between Back and Lay price is 0, or 1, whatever number of ticks?

Thanks!

Hi
The condition will be:
for 1 tick difference
and selections trigger expression g_ticks(back_price,lay_price) is equal to 1
for a maximum number of ticks use:
and selections trigger expression g_ticks(back_price,lay_price) is less than x

thanks!

Back/Lay price gap criteria

Hello Guest