How can I set zoom property?

Photoshop UXP Plugin API
1

I want to change the zoom property value of the document.

        const result = await batchPlay(
         [
            {
               "_obj": "set",
               "_target": [
                  {
                   "_ref": "zoom",
                   "_enum": "ordinal",
                   "_value": "targetEnum",
                   }
               ],
               "to": {
                  "_unit": "percentUnit",
                  "_value": 0.5
               },
               "_options": {
                  "dialogOptions": "dontDisplay"
               }
            }
         ],{
            "synchronousExecution": false,
            "modalBehavior": "fail"
         });

I wrote the code, but only the message window says “Set command is not available”.
Please help me.

2

I’d also love to figure out how to set the zoom level to an arbitrary zoom percentage

3

For setting the zoom to an arbitrary value, this works for me:

    await batchPlay(
      [
        {
          _obj: 'setPanZoom',
          _target: [{ _ref: 'document', _id: docId }],
          x: { _unit: 'pixelsUnit', _value: centerX },
          y: { _unit: 'pixelsUnit', _value: centerY },
          z: { _unit: 'percentUnit', _value: zoomScale },
          resize: false,
          animate: false,
          _options: { dialogOptions: 'dontDisplay' },
        },
      ],
      { synchronousExecution: true }
    );

Note that even though the label says “percentUnit” it is a scale factor (e.g. 1.0 for 100%).