Hi, You need to bind 'this' in this case. replace:
email: [null,[Validators.required,Validators.pattern( '^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+.[a-zA-Z0-9-.]+$'),this.isUniqueEmail]],. with email: [null,[Validators.required,Validators.pattern( '^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+.[a-zA-Z0-9-.]+$'),this.isUniqueEmail.bind( this)]], The validator function is called from within another context/scope when used. Regards Sander -- You received this message because you are subscribed to the Google Groups "Angular" group. To unsubscribe from this group and stop receiving emails from it, send an email to angular+unsubscr...@googlegroups.com. To post to this group, send email to angular@googlegroups.com. Visit this group at https://groups.google.com/group/angular. For more options, visit https://groups.google.com/d/optout.
