External links not working on iOS Device

I have a problem with external links in my ionic app. This not working when I run my App in a iOS emulator or when I install my debug App in mu iPhone.

I have similar problems in Android app.

I have in my config.xml file this:

I tried also with allow-indent

In my code I use:

this.inAppbrowser.create(enlace,’_system’, ‘location=yes’);

And I try also:

this.window.open(enlace,’_system’, ‘location=yes’);

¿Any idea about that?