Issue sending entity with IP Address from Home Assistant to Emoncms

I would like to send an entity which shows holds an IP address from Home Assistant to Emoncms. I can send various entities, but the one with the IP address doesn’t arrive - even though it does have the correct value when displayed in Home Assistant.

The configuration.yaml code section is like this:

api_key: 930d7b15afad0xxxxxxxxxx89e9edbf0
inputnode: 27
- sensor.dwr_921c3_external_ip_2
- binary_sensor.dwr_921c3_wan_status_2

Is it possible to send such an entity to Emoncms in some way?