Last_backp help please

Hi,
I'm having some difficulty with a condition
I want the back trigger to fire when the back price is x ticks lower then its price before the start of the event.
I tried the following but it doesn't work  (using tcks as a constant)
and selection's trigger expression back_price is less than r_ticks(last_backp, -tcks)
any help appreciated
Thanks
R

Hi,

You could just modify back-preoff-steamer


Larp

Thanks Larphager, but doesn't appear to be suitable for tennis
I think there is a condition I could add to my existing trigger.
I thought the one I referred to should work but apparently not.
Where am I going wrong ?
R

Hi
Have you defined the selection either in the conditions or in the variable?

selections index is equal to 2
and selection's back price is less than r_ticks(last_backp, -tcks)

selection's trigger expression s_2_back_price is less than r_ticks(s_2_last_backp, -tcks)

Hi Mark,

At the moment I just want any player matching conditions
I just need the basic settings
Do I need to use 'set user variable' settings ? if so full details please.
I thought I could just use the conditions block.
The condition below sounds correct, but obviously not.
and selection's back_price is equal or less than r_ticks(last_backp, -tcks)
This should take the current price then adding the ticks and result should be less than the price before the start. If that makes sense.
Maybe I do need the variable to record price before going in play.
Thanks
R

Hi
last_backp updates when idle and stops updating when the market turns inplay, retaining the last recorded back price for the selection before inplay. It should work without the need for a user variable.

Try this condition block:
AND
     selection's trigger expression s_1_back_price is less than r_ticks(s_1_last_backp, -tcks)
     or selection's trigger expression s_2_back_price is less than r_ticks(s_2_last_backp, -tcks)

It should work for either selection using the correct prices for each selection. You can check that it works ok if you put into the variable viewer and compare them:
r_ticks(s_1_last_backp, -tcks) <--- this one will return values for selection index 1
r_ticks(s_2_last_backp, -tcks) <--- this one will return values for selection index 2
      

Hi Mark
Works a treat. Thank You.
First time I've used that Viewer Variable box. Kinda neat eh?
Cheers
R

Hi Mark,
The viewer has highlighted the frailties of the Betfair market in that one event showed a zero odds price before it went in play despite monitoring market 10 mins before the off. Hence of course the trigger wouldn't fire.
The market eventually had a matched volume of 1.4 million. Safeguards need to be put in place in the event of these occurrences...... (by the way I only tested 6 events)
Proving once again the Betfair market has more tricks than the Cross on a Saturday night.
(not that I know of course!:)
R

Absolutely right. I think they're on top for a reason. And that's one of them.