setEmailTo not working anymore

I am using a javascript to submit a doc. The setEmailTo is ignored but the others like setEmailFrom or setEmailSubject are working well.
Could you have a look ?
Thanaks.

var fichierPDF = new PDF24Doc();

fichierPDF.setEmailTo(phstaquet@gmail.com);
fichierPDF.setEmailFrom(marie.rigo@gmail.com);
fichierPDF.setEmailSubject(Inscription 2017);
fichierPDF.setEmailBody(texte);
fichierPDF.setEmailBodyType(html);

fichierPDF.create();