Multiple lines in Vega

[Itamar]

I want to create a graph with multiple line like this:

and the data set look like that:

"buckets": [
        {
          "key": 0,
          "height": {
            "buckets": [
              {
                "height_id": 20,
                "Yes/no_Choose": {
                  "buckets": [
                    {
                      "height_value": {
                        "value": 20
                      },
                      "yes/no": 0,
                    },
                    {
                      "height_value": {
                        "value": 40
                      },
                      "yes/no": 1
                    }
                  ]
                }
              }, and so on...

The data set have the X-axis- key
so for each key in the data set there's a list of "height_ID's" and for each of ID's there's a list of "yes/no" called "Yes/no_Choose".
and in each yes/no there's a value that presenting on the Y_Axis.

I tried to find a way to show those 6 multiple lines, and link them to groups of "yes" and :no" but I had tough times with finding a way to do it.
Is it even possible?
Thanks.

[Marius_Dragomir]

@nyuriks