In Form JavaScript to show/hide a form field does not workion mobile phone

Hi,

I have a form with a number of check boxes and calculations.

When one of certain check boxes is checked, then another form field is hidden or shown.

This works well on my laptop in Acrobat.

However, on my mobile phone this show/hide feature does not work. All other features and calculations work.

The code (from another post in this forum, thank you very much!) is:

var nHide = event.target.isBoxChecked(0)?display.hidden:display.visible;
this.getField("total").display = nHide;

On my mobile phone I use the Acrobat app.

Is this a known issue?

Or do I have to change something?

Does anyone know, whether these features work with other PDF viewers (PC or mobile phone)?

Best regards

Winfried