Quote from Sashe:
I had trigger method set at "Default" which is corresponding to Double Bid/Ask
No, If you're talking about futures than this is not true :
If "Default" is selected, then the double bid/ask method will be used for orders for
OTC stocks and US options. All others orders will use the last method.
So If you're trading futures you're using last. This is the trigger for last :
If "Last" is selected, stop orders will be triggered based on the last price.
For example, for a sell order, there must be one last price that is less than or
equal to the trigger price.
Also, below on the trigger page, you can select " Allow triggering outside of regular trading hours."
NOTE : This settings applies to stop orders on GLOBEX and to simulated Stop-Limit orders on other exchanges only.