IB Relative/Pegged-to-Primary Order

When I submit a relative/pegged-to-primary bid through IB with a zero offset, the bid adjusts up but it doesn't roll-back when the market moves down. I checked the documentation for TWS, which states:

NOTE: For orders with a "0" offset, the order is submitted as a limit order at the best bid/ask, and will move up and down with the market to continue to match the inside quote.

Why doesn't this work for me? What am I missing?

 

dunkindog, PM sent.

 

Seems to be working now. I must have been placing the order incorrectly.

 

i've noticed that if you send this order type to ARCA it doesn't always work all the time