ba.placebets COM Placement Order

[jc0r]

Anyone know why when you submit multiple bets, they don't always place in the order they were intended?

So you can have the following

Code: Select all

    Dim refs() As String
    Dim selecIds(59) As Long
    Dim betTypes(59) As String
    Dim odds(59) As Double
    Dim stake(59) As Double
    Dim tokens(59) As String

selecIds(0) = 1
selecIds(1) = 2
selecIds(2) = 3
selecIds(3) = 4
selecIds(4) = 5
selecIds(5) = 6
selecIds(6) = 7
selecIds(7) = 8
selecIds(8) = 9

betTypes(0) = "B"
betTypes(1) = "B"
betTypes(2) = "B"
betTypes(3) = "B"
betTypes(4) = "B"
betTypes(5) = "B"
betTypes(6) = "B"   
betTypes(7) = "B"
betTypes(8) = "B"

odds(0) = 100
odds(1) = 200
odds(2) = 300 
odds(3) = 400
odds(4) = 500
odds(5) = 600
odds(6) = 700
odds(7) = 800
odds(8) = 900

stake(0) = 0.2
stake(1) = 0.2
stake(2) = 0.2
stake(3) = 0.2
stake(4) = 0.2
stake(5) = 0.2
stake(6) = 0.2
stake(7) = 0.2
stake(8) = 0.2


I want (0) to be first, (1) to be second etc. A lot of the time it works, but sometimes it doesn't and I can't figure out why. I use the bet reference given by Betfair to determine which one was submitted first.

Any idea?

Thanks

[osknows]

It's the same when using the API directly, there's no guarantee of ordering.

What you can do is use the token as a dictionary key. Eg say you want to track both BACK and LAY bets separately, each time a new bet is going to be placed create a unique key that can be used in the token eg BACK1, BACK2, BACK3, LAY1, LAY2, LAY2 etc

eg create a class module to hold the bet details, say clsBet

Code: Select all

Public Token As String
Public BetId As String
Public selectionId As Long
Public MarketId As String
Public betType As String
Public Stake As Double
Public Odds As Double
Public Matched As String

then create a dictionary to hold multiple instances of clsBet

Code: Select all

Dim BetRefDict As Object
Set BetRefDict = CreateObject("Scripting.Dictionary") 'Add reference to Microsoft Scripting Dictionary

Create a new clsBet and add it to the dictionary

Code: Select all

Set newBet = New clsBet
newBet.Token = "BACK1"
neBet.MarketId = 1.xxxxxx
newBet.Odds = XYZ
'etc

BetRefDict.Add newBet.Token, newBet

then when each bet is received in the ba_betPlaced event you can lookup the dictionary key using the token and add the betId

Code: Select all

If BetRefDict.Exists(token) Then
 BetRefDict(token).BetId = ref
End If

You then have full bet details and can link it to a betId

[jc0r]

Many thanks for the detailed reply. Unfortunately, I have no need to track bets, i only care which bet actually gets submitted first to the exchange. So unless I submit them separately, am I right in thinking I cannot control this through ba.placebets sending an array of bets?

Many thanks

[osknows]

Using the same method you can timestamp the bets you are submitting if you need to determine timing of bets between different ba.placebets requests. There's no way to know what was placed first though in a single ba.placebets request as all bets were placed in the same request and received in the same response.