Author Topic: Last_backp help please  (Read 2350 times)

Tags:
  • All members
  • Posts: 737
  • Karma: +17/-2
Last_backp help please
« on: Sun, 31 August, 2014, 10:39 »
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

My grandma taught me not to run downstairs and never back odds on.

  • All members
  • Posts: 615
  • Karma: +32/-5
  • Gender: Male
Re: Last_backp help please
« Reply #1 on: Sun, 31 August, 2014, 11:06 »
Hi,

You could just modify back-preoff-steamer


Larp


  • All members
  • Posts: 737
  • Karma: +17/-2
Re: Last_backp help please
« Reply #2 on: Sun, 31 August, 2014, 15:27 »
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
My grandma taught me not to run downstairs and never back odds on.

  • Moderator
  • Posts: 2823
  • Karma: +232/-0
*
Re: Last_backp help please
« Reply #3 on: Sun, 31 August, 2014, 17:50 »
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)
Please read the following disclaimer with regards to the information you may request and obtain on our forum. This specifically concerns trigger files and various instructions as to how to implement a strategy.

  • All members
  • Posts: 737
  • Karma: +17/-2
Re: Last_backp help please
« Reply #4 on: Sun, 31 August, 2014, 20:10 »
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
My grandma taught me not to run downstairs and never back odds on.

  • Moderator
  • Posts: 2823
  • Karma: +232/-0
*
Re: Last_backp help please
« Reply #5 on: Sun, 31 August, 2014, 21:24 »
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
      
Please read the following disclaimer with regards to the information you may request and obtain on our forum. This specifically concerns trigger files and various instructions as to how to implement a strategy.

  • All members
  • Posts: 737
  • Karma: +17/-2
Re: Last_backp help please
« Reply #6 on: Mon, 01 September, 2014, 10:37 »
Hi Mark
Works a treat. Thank You.
First time I've used that Viewer Variable box. Kinda neat eh?
Cheers
R
My grandma taught me not to run downstairs and never back odds on.

  • All members
  • Posts: 737
  • Karma: +17/-2
Re: Last_backp help please
« Reply #7 on: Mon, 01 September, 2014, 14:22 »
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
My grandma taught me not to run downstairs and never back odds on.

  • All members
  • Posts: 80
  • Karma: +0/-0
Re: Last_backp help please
« Reply #8 on: Mon, 22 September, 2014, 16:20 »
Absolutely right. I think they're on top for a reason. And that's one of them.
Automatic isn't always everything.