How to select specific series in a dashboard graph for AIX Network Stats

We are showing the "Output Packets" metric from the "AIX: Network Stats" DA in a dashboard but we want to only show the network interface named "en1" (and not en0 etc), is this possible in a dashboard widget ?

From the Device page if you look at this metric you can tick/select which interface you want to see or select the interface via "Options -> Series Selection" and we want to do the same from the Dashboard widget.

Any advice really appreciated as I am struggling to find how to do this, it works ok from a Linux DA using context driven dashboard as the metrics are stored under "Interfaces" rather than "Devices" but for AIX this is not the case.