textStyleRange with dropCap or grepStyle - Not working!

Hello!

(Yes, that again me, that don`t know English, everything is from Google Translate ...)

I created a script that changes the text width settings (horizontalScale)

That:

var m = app.activeDocument.selection [0]. textStyleRanges;

     var myin = app.activeDocument.selection [0]. characters [-1]. index;

     for (a = 0; a <m.length; a + +)

                     {

                 m [a]. horizontalScale = m [a]. horizontalScale-1;

                     }

But!

If you have active or GREPSTYLE dropCapStyle the "textStyleRange" does not recognize it at all, and it disrupts everything.

Do you have advice?

Thank you very much!