I am running in some troubles regarding options in the research pane. I want to plot a chart with the midprices of 1 minute bars of SPY calls that are ATM on the first day of the timeframe. However, in my accompanying notebook, the selection of ATM options doesn't seem to work. the filters method requires a minimum of 1 up and down, which includes more strike prices than only the ATM one. How can you select just 1 contract? furthermore, the filter returns more contracts than just the one expiring within the 40 day timeframe. How can I circumvent this?

Help is much appreciated, thanks :)