Is that possible to make a select box using signals in vega-lite?

I wonder if I could put select box in vega-lite graph using signals.
This is what I found for example.

The code of red area would be this.

  "signals": [
      "name": "timeunit", "value": ["day"],
      "bind": {"input": "select", "options": [
        ["year"], ["month"], ["date"], ["day"], ["hours"]
      "name": "measure", "value": "delay",
      "bind": {"input": "select", "options": ["count", "delay"]}

Hello, I have answered this in the previous thread regarding this. Closing this and we can continue there.