Open custom url from vscode

I'd like to create a shortcut to open a custom link generated using the selected text from the current editor. So far I tried:

    {
        "key": "ctrl+enter",
        "command": "workbench.action.url.openUrl",
        "args": {
          "text": "https://www.thesaurus.com/browse/${selectedText}"
        },
        "when": "editorTextFocus"
    },

with no success. Is it possible?