tick diff formula

Hi,

Can someone confirm that the odds must drop by 5 ticks in the below formula

Favourite's Back ticks diff over x mins is equal or greater than 5

If not, then how do I write it ?
eg:
current back odds  1.60
x mins later odds    1.55 or less
condition is met.
Thanks
R

Hi
Favourite's Back ticks diff over x mins is equal or less than -5

Thanks Mark,
I had it the wrong way around.
R

Hi Mark,
Does the method of calculating tick diff for Back include the Lay price?
EG:
odds x mins ago  Back 1.60 Lay 1.62
odds now                     1.40        1.58
If I chose a -20 tick diff then using the Back alone condition is met
thus resulting in a skewed outcome.
Can you please enlighten me further
Thanks
R

Hi
The condition Favourite's Back ticks diff over x mins is equal or less than -5 refers only to the back price.
If you want precise parity use:
Favourite's Back ticks diff over x mins is equal or less than -5
and Favourite's Lay ticks diff over x mins is equal or less than -5
...but in the thin market you describe it is unlikely both conditions will be met

I would use:
Favourite's Back ticks diff over x mins is equal or less than -5
and selections trigger expression g_ticks(back_price,lay_price) equal or is less than <your acceptable spread in ticks>  

Hi Mark,
Thanks,
I am already using the latter with a 2 tick gap. Perhaps I should widen it.
R