var mySel = app.selection[0]; 
 
app.findTextPreferences = app.changeTextPreferences = null;   
app.findTextPreferences.appliedParagraphStyle = "Nummer";  
var myResult = mySel.findText();   
   
for (var oneResult=myResult.length-1; oneResult >= 0; oneResult--) {   
  myResult[oneResult].insertionPoints[0].contents = String(oneResult+1)+'\t'; 
} 

var doc = app.activeDocument; 
 
var mySel = doc.selection[0]; 
 
 
// Alle Absätze in aktueller Auswahl 
var paras = mySel.paragraphs.everyItem().getElements(); 
 
 
for (var j=0,l=paras.length; j<l; j++) { 
   var para = paras[j]; 
   if (para.appliedParagraphStyle.name == 'Nummer') { 
     para.insertionPoints[0].contents = String(j+1)+'\t' 
   } 
} 

var doc = app.activeDocument;  
  
var mySel = doc.selection[0];  
  
// Alle Absätze in aktueller Auswahl  
var paras = mySel.paragraphs.everyItem().getElements();  
 
 for ( j = paras.length-1; j>= 0; j-- )   { 
 
   var para = paras[j];  
   if (para.appliedParagraphStyle.name == 'Nummer') {  
     para.insertionPoints[0].contents = String(j+1)+'\t'  
   }  
}