Can this be automated: Selecting multiple seperate rectangle shapes and calculating the L & W

Okay, so I updated the script to add a "*" after any width or height that was rounded up to 2. Also, if either dimension of a die is less than 2, I include a "*" in the area (sq/in) info.

When you mentioned "in red", I didn't know if you meant the layer tab color in the layers palette or the die info text color, so I set both to red.

Finally, the information layer is set to "printable" so it will show up by default in Acrobat.

Test the udpated script below out and let me know if this get you what you needed? Cheers!

/*
DiePathDimensions.jsx for Adobe Illustrator
-------------------------------------------

Add **selected** die path width, height, and area to the artboard.

Created in response to this question on the Adobe forum:
https://community.adobe.com/t5/illustrator-discussions/can-this-be-automated-selecting-multiple-seperate-rectangle-shapes-and-calculating-the-l-amp-w/td-p/14648989
*/

(function () {
  // setup variables
  var doc, infoLayer, die, w, h, info, frame;

  // no need to continue if there is no active document
  if (!app.documents.length) {
    alert("No active document.");
    return;
  }

  doc = app.activeDocument;

  // no need to continue if there is no active selection
  if (!doc.selection.length) {
    alert("No active selection.");
    return;
  }

  // cleanup old info if found
  try {
    infoLayer = doc.layers.getByName("DIE INFORMATION");
    infoLayer.remove();
  } catch (error) {
    $.writeln("infoLayer not present");
  }

  // setup the layer/info color info
  var color = new RGBColor();
  color.red = 255;
  color.green = color.blue = 0;

  // create a layer to hold the die information
  infoLayer = doc.layers.add();
  infoLayer.color = color;
  infoLayer.name = "DIE INFORMATION";

  // please note: in the sample file, each die was grouped by iteself and
  // withing another larger group that included a few text boxes so this script
  // only acts on the first pathItem within the die pathItem group

  // iterate over each selected object
  for (var i = 0; i < doc.selection.length; i++) {
    die = doc.selection[i].pathItems[0];
    w = UnitValue(die.width, "px").as("in");
    h = UnitValue(die.height, "px").as("in");
    a = w * h;
    // ensure minimum die size requirement of 2 for both width and height
    wString = w < 2 ? "2*" : w.toFixed(4);
    hString = h < 2 ? "2*" : h.toFixed(4);
    aString = w < 2 || h < 2 ? a.toFixed(4) + "*" : a.toFixed(4);
    // format the info as:
    // XX.XXXX in x XX.XXXX in
    // XX.XXXX sq/in
    info = wString + " in x " + hString + " in\n" + aString + " sq/in";
    // add a new text frame at the top left of the die with the die info
    frame = infoLayer.textFrames.add();
    frame.position = Array(die.left, die.top);
    frame.textRange.size = 12;
    frame.textRange.fillColor = color;
    frame.contents = info;
  }
})();