Angular 2 Toaster Pop up with Translation

Question

I am using Angular 2 Toaster in my application and also NGX-translate. I would like to achieve a Toaster with Translated items. It should be like below.

translate.setTranslation('en', {
    INVALID_CREDENTIALS: 'Invalid Credentials'
});
this.translate.get('INVALID_CREDENTIALS').subscribe((res: string) => {
    this.toasterService.pop(this.createToast("success", "Success",res));
});

Here I would like to get the popup with success with Invalid Credentials, but unfortunately it displays

INVALID_CREDENTIALS