var _dok = app.activeDocument; 
var tF = _dok.textFrames.itemByName("_Name"); 

function suchenUndErsetzen() { 
 
app.findGrepPreferences = NothingEnum.nothing; 
app.findGrepPreferences.findWhat= "^(\\d{4}#)\r"; 
app.changeGrepPreferences = NothingEnum.nothing; 
app.changeGrepPreferences.changeTo= ""; 
app.activeDocument.changeGrep(); 
//usw 
} 

tF.findGrep(); 

tF.changeGrep(); 

for (var a = 0; a < allPageItems.length; a++) { 
  // das aktive Objekt 
  var curPageItem = allPageItems[a]; 
  var curName = curPageItem.name; 
  var curSide = curPageItem.parentPage.side; 
 
if (curName == "fuss" && curSide == PageSideOptions.LEFT_HAND) { 
    // das Objekt verschieben 
    curPageItem.move([110, 142]); 
     
    meinInhalt = curPageItem.texts[0].paragraphs[0].contents; 
 
    app.findGrepPreferences = NothingEnum.nothing; 
 
    app.findGrepPreferences = NothingEnum.nothing; 
    app.findGrepPreferences.findWhat = "abc"; 
 
    app.changeGrepPreferences = NothingEnum.nothing; 
    app.changeGrepPreferences.changeTo = "xyz"; 
 
    curPageItem.findGrep(); 

wpsReplaceWithGrep(curPageItem, searchString, replaceString); 
/*Array*/function wpsReplaceWithGrep(object, searchString, replaceString) 
{ 
    try 
    { 
        //Reset the find/change grep preferences before each search. 
        app.findGrepPreferences = NothingEnum.nothing; 
        app.changeGrepPreferences = NothingEnum.nothing; 
        app.findChangeGrepOptions = NothingEnum.nothing; 
        app.findGrepPreferences.findWhat = searchString; 
        app.changeGrepPreferences.changeTo = replaceString; 
        var founds = object.changeGrep(); 
        app.findGrepPreferences = NothingEnum.nothing; 
        app.changeGrepPreferences = NothingEnum.nothing; 
        app.findChangeGrepOptions = NothingEnum.nothing; 
        return founds; 
    } 
    catch (error) 
    { 
       founds = []; 
       throw error; 
    } 
} 

    curPageItem.changeGrep();