The ABS function is removing the decimal part of a number.
e.g.
tradeType: [tradeType], layPrice: [lay_price], backPrice: [back_price], ABS(total): [ABS(total)], total: [total]
writes this to the log:
Special log message from trigger "SET hedgeStake". tradeType: "LAY", layPrice: 1.67, backPrice: 1.54, ABS(total): 6.00000000, total: 6.48000000. Market "Soccer - Fixtures / Fixtures 31 January / Skonto Riga v FK Daugava Riga / Over/Under 2.5 Goals - Over/Under 2.5 Goals".