26/02/2016 10:59:38: £ 20.00 Back bet placed on Bamako Du Chatelet at 4.3. Fully matched at 4.3. Ref: 10000
Which gave me the following Screen Shot:

26/02/2016 11:00:31: £ 29.15 Lay bet placed on Bamako Du Chatelet at 3. Entirely unmatched when it initially reached the market. Ref: 10001
26/02/2016 11:00:34: Modify bet persistence 10001 from 'Cancel' to 'Keep'
This Lay of 3 was eventually matched during the race.
End of race Screen Shot:

Now according to my spreadsheet that I use for Match Betting, I ended up with a profit of £7.70.
However, in the picture above what is Trade profit £190.70?
Should I have Ticked Green?
How risky was that bet, and could I have done it better?