Control of Parameters for Homeseer FLS100+

I have a Homeseer FLS100+ installed on my C7 hub and want to be able to control a parameter of the device from a virtual switch. I have looked at how I might do this from either the Rule Machine or Webcore and am unable to figure out how to do it. I can see the parameter in the device but can't see how to control it from either the Rule Machine or Webcore.

I am a ST refugee and have experience with Webcore from that environment. In fact, I had some pistons controlling FLS100+ devices there but I don't have access to that piston anymore. I am a newbee at Rule Machine but it looks pretty straightforward. I just can't figure out how to control a parameter from either one.