Sometimes required start-to-end numbering. Clear and consistent list of numbers for each drawing. There are many different ways to solve issue this kind. As for me, I prefer to use a small and useful script.

What we will do is to set for each selected drawing in drawings list a number, one by one these will get a straight list of numbers.

So first we have to get access to a list of selected drawings. Then move through each element, and add a number. Isn’t pretty simple it? Listing of script is also small and useful, so you could rearrange it for your needs.

namespace Tekla.Technology.Akit.UserScript
{
    using TSD = Tekla.Structures.Drawing;
    using System.Windows.Forms; //used for messageBox.show()
    
    public class Script
    {
        public static void Run(Tekla.Technology.Akit.IScript akit)
        {
		MessageBox.Show("Total number of drawings: " + CAD_NumberSelectedDrawings().ToString());
        }


      static int CAD_NumberSelectedDrawings()
        {
        
            int i = 0; //register number counter
            var CurrentDrawingHandler = new TSD.DrawingHandler(); // get current drawing handler
            var drawingsEnum = CurrentDrawingHandler.GetDrawingSelector().GetSelected(); //list of selected drawings
            while(drawingsEnum.MoveNext()) //going through it one by one
            {
                var _drawing = drawingsEnum.Current as TSD.Drawing;  //particular drawing
		i++;
		//and finally set number as "DRAWING.USERDEFINED.Page" UDA property.
		_drawing.SetUserProperty("Page", i.ToString()); //change "Page" to name of your UDA
            }
	return i;
        }
    }
}