problem with listMarketBook

[Sgt. Sunshine]

Hi

I am having trouble retrieving runners' orders and matches through listMarketBook.

The POST string is

{"jsonrpc": "2.0", "method": "SportsAPING/v1.0/listMarketBook", "params": { "marketIds" : ["<mktID>"], "priceProjection" : {"priceData":["EX_BEST_OFFERS","SP_AVAILABLE"]}, "orderProjection" : "ALL", "matchProjection" : "ROLLED_UP_BY_AVG_PRICE"}, "id": 1}


and it the JSON response string is good and contains all data except the 'orders' and 'matches' information, which is not referred to in the response. Deserialization returns Nothing where the data should be. What is wrong with my POST?

Thanks for any help

[Sgt. Sunshine]

I read somewhere that listMarketBook was upgraded and a new client was mentioned. Do I need to get a new App Key? I can't seem to get that to work now either following the instructions and going through the visualiser! Is that likely to be the problem?