XType | ${KEY_CMD+KEY_UP} not working on Mac

The following command isn’t working correctly for me:

{
      "Command": "XType",
      "Target": "${KEY_CMD+KEY_UP}",
      "Value": ""
    }

It’s just moving to the line above – just one line – instead of moving to the 1st line.

Should I be using it differently? Any workarounds?
Thanks!

It is a known issue, see XType for Mac KEY_CMD not working

Workaround: Use XRun and some Python sendkeys, see I really need spacebar to work with XType or otherwise