Hi
Action: back at SP, Price Limit: leave blank for no price limit, Liability: default_backsp (this is per your settings, or just put a back amount in here)
Selections: all matching selections
Markets: win markets
Execute: once per market
Status: all except settled
Conditions:
markets sp is supported
and selections back price is between 2.00 and 10.00 (here you can put your price range)
and markets minutes before the off is equal or less than 0.5
please use test mode
or if you want a trigger made for you you can use the trigger development service:
https://community.welldonesoft.com/marketfeeder-make-me-a-trigger/