Thank you so much.
I wasn’t sure where to add the [0] exactly. But at least I had somethign to play with.
After a couple tries values: [“0.price”] yields output of Price: “2.1” which is clear enough for my needs.

Tried that. It doesn’t work.
The field just doesn’t display any data at all

if i set

values: [""]

it shows

So, I got my MM working. Set up a few modules and learning along the way.
Than comes the JSON file that I get to display, but I only care about a part of it.
Its a ComEd Hourly Pricing and the output it gives is

0:[{"millisUTC":"1517732400000","price":"2.1"}]

I just want the 2.1 output

there is a “values” option that seems to be what I need to use,
ie:

Example: [“key1”, “key2”, “keyA.keyB.keyC”]

but when I add the last line

{
    module: 'MMM-json-feed',
    position: 'bottom_left',
    config: {
      url: 'https://hourlypricing.comed.com/api?type=currenthouraverage&format=json',
      title: "ComEd Hourly Pricing",
      values: ["key4"],
      
    }
  },

it doesnt work.

Am I doing something wrong?