How to Send ${} in Mender Configure?

I am trying to send the following string using Mender Configure:

  • abc ${def} ghi

However, when I check the received value on the device, it appears as:

  • abc ghi

It seems that Mender Configure removes any content enclosed within ${}.

Question:

Does Mender Configure not support sending values containing ${}? If so, is there any way to escape or preserve them?

Steps to Reproduce:

  1. In the Mender UI, go to Configuration, set the key to test, and the value to abc ${def} ghi.
  2. Click SAVE AND APPLY TO DEVICE.
  3. Check the content of /var/lib/mender-configure/device-config.json on the device.
    # cat /var/lib/mender-configure/device-config.json | jq .test
    "abc  ghi"