Trigger following odds movement / Steams

Hello guys, 

I have been trying to figure out a solution to implement. I need a trigger that notifies me (no bet placed) when there is some minor/major movement in a market/selection/. I am going to use it for arbitrage with other bookmakers. The idea is that the price moves first at Betfair compared to the bookie I use. The problem is that right now I have to compare odds manually by myself, it is daunting task with some questionable result. I like this to be automated. Any ideas and suggestions are welcomed. Here is the idea

1. All bets will be placed Before kick-off. No in-play! 
2. Major soccer games only *Premiership, Bundesliga etc.  - I need to follow up to 30-50 markets daily. Only Match odds markets - 100-150 selections in total.
3. When there is some minor/major Leap / tick movement (doesn't matter up or down) in ANY of the Markets/selections added - Notification

I figured that I shall use MF in Full mode. And here are my doubts - I am not quite sure which price differences / periods of time to use. I have to choose (0.5, 1, 2 min) by default. I am thinking more of a 0.5, 2 and 30 minutes. Short time for the knowing of the beginning of the action and long time to be sure that the market is interesting and not completely settled at equlibrium. (fair price are achieved). 

It should be something like : 1 STEP If there are > 2/3 ticks ( price difference) movement for 0.5 minute interval - Notification AND
2nd Step - the longer period - 1 minute the price different is bigger than that  in the first step. (4-5 ticks).

I hope you get the idea. Thank you !

Hi
No problem making a trigger to alert on price movement. There are probably some ready made triggers that could be adapted, or you could have a trigger to your specification through the trigger development service.

There is a variable tdif_ (see helpfile) which will measure tick difference over any length of time.

But if you will be monitoring many markets for hours then you will need to put some money into those markets or Betfair may consider your usage of their API as business usage.

Hi
As an example attached screenshot shows conditions for alert which are:
(in either direction)
tick difference over 1 minute equal or greater than 2
and tick difference over 15 minutes equal or greater than 4

second screenshot shows the alert.  the numbers in the columns are:
tick difference over 1 minute
tick difference over 15 minutes
it picked up the drift on Bayern quite nicely  
  

Thanks MarkV

Yes, I did turn to the MF support for help. I didn't know about the Bf plicy for usage of data and closing accounts. 
I do infact bet at least 1 000 GBP daily (back + lay stakes). I hope there will be no problem for using such a resource and monitoring so many markets. And this is at the top of my regular strategies, for which I do use different PC/MF login. I set the transaction limit up to 400 on both copies. The other point is that I don't know how heavy the trigger will be. I mean in API requests terms. 

Wait and see what will happen.

Hi
You should be fine. From your first post it sounded like you are monitoring Betfair prices to place bets at bookies.

I also do lots of pre-off football trading and keep a low idle refresh rate around 15 to 20 secs. I think any more than 50 markets concurrently refreshing will slow down MFP but you can experiment and see what is best for you.