I am using the below script to number the grey box / "dynamic" portion of the tag. Basically, you select all the objects you want numbered and run the script. So in my case, I select same fill of the grey "dynamic" portion and run the script and it adds number, however formatting isn't quite right. 

I feel like I am almost there..  But I need help to edit a bit to get the formatting...

Basically, here is what I am looking for as the desired outcome. Need to adjust the following elements: 

1. Change it to a defined font character and style, ie: Proxima Nova Regular, size= 17pt, tracking= -10, paragraph= align center.
2. Define the color as a specific CMYK value, ie: C0 M0 Y0 K1
3. Add leading 00's so the outcome would be 001 through 999 (this one I could do without if it's complicated, as I can use the "fix sequential numbers script" below to add the 00's if need be - or maybe you can help incorporate this as part of this script?).
4. Center the 001 vertically and horizontally on the grey box
5. Maintain the group, ie: so the number created is grouped with the rest of the tag.

Here is the script I'm using thus far...

Add numbers script

var document = app.activeDocument;           //Use the current open Ai File

var selected = document.selection;           //Use the current selection in Ai

for (var i = 0; i < selected.length; i++) {  //Iterate over every selected object

    var text = document.textFrames.add();    //Add a new text object

    text.contents = i + 1;                   //Set the corresponding number text

    text.top = selected.top - 10;         //Position the text object underneath

    text.left = selected.left;

    text.textRange.characterAttributes.size = 24;

    text.textRange.characterAttributes.fillColor = document.swatches[4].color; // use the 4th swatch's color

}

Fix Sequential Numbers Script

// fixing sequential numbers

// a script for Adobe Illustrator CSx-CCx

// For the selected text objects, change each content so that they become

// a sequential numerical values at even intervals from the backmost value

// to the foremost value.

// For the number of decimal places and the number of zero-filled digits,

// the largest one of the foremost value and the backmost value is adopted.

// (Fractions are rounded off as necessary.)

// ex. (the left end is the backmost and the right end is the foremost)

// 1 1 1 1 5     -> 1 2 3 4 5

// 1.0 x x x 5   -> 1.0  2.0  3.0  4.0  5.0

// 1 1 1 1 5.00  -> 1.00  2.00  3.00  4.00  5.00

// 1.0 1 1 1 6   -> 1.0  2.3  3.5  4.8  6.0

// 1 1 1 1 6     -> 1 2 4 5 6

// 01 1 1 1 5    -> 01 02 03 04 05

// 00 1 1 1 1 10 -> 00 02 04 06 08 10

// Hiroyuki Sato

// http://shspage.blogspot.com/2009/06/fixing-sequential-numbers.html

// 2018-10-03

main();

function main(){

  if( app.documents.length < 1 ){

    alert("ABORT\rthere's no open document");

    return;

  }

  var texts = [];

  var sel = app.activeDocument.selection;

  if(!(sel instanceof Array) || extractTextFrames(sel, texts) < 3){

    alert("ABORT\rplease select 3 or more text objects");

    return;

  }

  var num_to   = texts[0].contents - 0;

  var num_from = texts[ texts.length - 1 ].contents - 0;

  if(isNaN(num_to) || isNaN(num_from)){

    alert("ABORT\rthe foremost and the backmost text objects in the selection must be a number.");

    return;

  }

  var interval = (num_to - num_from) / (texts.length - 1);

  var decimal_places = 0;

  if( texts[0].contents.match(/\.(\d+)/)){

    decimal_places = RegExp.$1.length;

  }

  if( texts[ texts.length - 1 ].contents.match(/\.(\d+)/)){

    decimal_places = Math.max( decimal_places, RegExp.$1.length );

  }

  var zero_fill = 0;

  if( texts[0].contents.match(/^0+\d*/)){

    zero_fill = RegExp.lastMatch.length;

  }

  if( texts[ texts.length - 1 ].contents.match(/^0+\d*/)){

    zero_fill = Math.max( zero_fill, RegExp.lastMatch.length );

  }

  var s;

  for(var i = 0; i < texts.length; i++){

    s = (num_to - interval * i).toFixed(decimal_places);

    if( zero_fill > 1 ){

      while( s.match(/^\d+/)

             && RegExp.lastMatch.length < zero_fill ){

        s = "0" + s;

      }

    }

    texts.contents = s;

  }

}

// --------------------------------------

function extractTextFrames(s, arr){

  for(var i = 0; i < s.length; i++){

    if(s.locked || s.hidden){

        continue;

    } else if(s.typename == "TextFrame"){

      if(s.textRange.characters.length > 0) arr.push(s);

    } else if (s.typename == "GroupItem"){

      extractTextFrames(s.pageItems, arr);

    }

  }

  return arr.length;

}

Salut,

Je peux vous faire le script, il me suffit juste d'un exemple de fichier,

Me contacter par mail.

LR

Hello

I can make you the script, I just need an example file,

Contact me by e-mail.

exemple:

remove 03 05 07 08 09

I wrote a similar script for a client (sorry I can't share it). PM me if you're interested in getting a script written for your needs.

thanks

Carlos

JET (James Talmadge) posted a couple of numbering scripts but I don't see them posted anymore. You might try contacting him.