The roll number = Decimal Value for the HEX + (255*.02) for the house edge.
255 = ff the max roll.(e4 = 228 )+( ff*.02 = 5.1) = 233.1 As for the transaction id I get it by using the command get_account_history steemrollers -1 1 which gives me the last txid steemrollers' account. If there are multiple rolls going on sometimes it takes the roll after. The bot uses the txid it returns in the memo. I will be working out these bugs soon.
Would you prefer I put the edge on the payout instead of the roll?