Extract page with separator

Hello

I'm a begginner on javascript for acrobat 10

I want tosplit apdffile into multipleparty.Each partis separated by apage that contains astringknown predefined.

Based on this script I have write that:

var pageArray = [];

var Pagedebut=0;

var Pagefin = 0;

// DEFINITION DU SEPARATEUR

var ChaineSeparateurAChercher ="CCLVGSEPARATEYOURPDFHEREBYNA"

// RECHERCHE DU SEPARATEUR

for (var p = 0; p < this.numPages; p++) {

    // iterate over all words

    for (var n = 0; n < this.getPageNumWords(p); n++) {

        if (this.getPageNthWord(p, n) == ChaineSeparateurAChercher) {

            pageArray.push(p);

            break;

        }

    }

}

// Extraction des pages

if (pageArray.length > 0) {

        for (var n = 0; n < pageArray.length; n++) {

              //Création du nouveau document

        var newdoc = app.newDoc();

                // Extraction Page vers nouveau fichier

            newdoc.insertPages( {

            nPage: d.numPages-1,

            cPath: this.path,

            nStart: Pagedebut,

            nEnd: pageArray[n],

        } );

        // Suppression page blanche dans nouveau ficheir

        newdoc.deletePages(0);

        // Suppression page Separateur dans nouveau ficheir

        newdoc.deletePages(d.numPages-1);

        //enregistrement du fichier

        var NomNvFichier = this.documentFileName + "_Extrait-" + n

        var PathNvFichier = this.path.replace(this.documentFileName,NomNvFichier);

        newdoc.saveAs(PathNvFichier);

        // Redifinition page debut = pagefin

        var Pagedebut = pageArray[n]

    }

}

When i start this script I have an error  on " Doc.saveAs:43" but the debbugger (or me ) don't work fine and i don't know what is this error

Can Anyone help me?

Sorry for my "Google translate " English