How do you use Regex capture groups

Ui.Vision General Discussion
2

The notation to extract regex capture groups in UI.Vision is
regex=…@MATCH,GROUP:

regex%20capture%20groups
regex capture groups.png843×1098 201 KB

My test macro:

{
  "Name": "js",
  "CreationDate": "2020-2-25",
  "Commands": [
    {
      "Command": "open",
      "Target": "https://en.wikipedia.org/wiki/IP_address",
      "Value": ""
    },
    {
      "Command": "sourceExtract",
      "Target": "regex=172\\.\\d+\\.(\\d+)\\.\\d+@1,1",
      "Value": "match1_group1"
    },
    {
      "Command": "sourceExtract",
      "Target": "regex=172\\.\\d+\\.(\\d+)\\.\\d+@3,1",
      "Value": "match3_group1"
    },
    {
      "Command": "sourceExtract",
      "Target": "regex=172\\.\\d+\\.(\\d+)\\.\\d+@5,1",
      "Value": "match5_group1"
    },
    {
      "Command": "echo",
      "Target": "${match1_group1}",
      "Value": "green"
    },
    {
      "Command": "echo",
      "Target": "${match3_group1}",
      "Value": "blue"
    },
    {
      "Command": "echo",
      "Target": "${match5_group1}",
      "Value": "brown"
    }
  ]
}