Help with Shield-Shield

I’m pretty new to Konekt and trying to use the Shield-Shield with my Dash and a simple relay shield. To switch the relay I simply need to do a digitalWrite to pin 3, but I’m not sure how to do this using the Dash and the Shield-Shield. Any advice would be appreciated!

Easy enough with an arduino: digitalWrite(3, HIGH)

…but how I do it with a Dash??? I’ve tried digitalWrite(R04, HIGH) which I thought was the mapping, but no luck.

Thanks

Further testing…shows the Shield isn’t getting power, so either this is a problem with the Shield-Shield or a misunderstanding on my part on what the Shield-Shield is supposed to do.