Gesture navigation: Activate only the pinch zoom gestures

Hi all,

I`m using Captivate 9 and publish in HTML5, non-responsive.

I would like to activate the gesture navigation for mobile devices. However the only gestures I would like to allow are the pinch zoom gestures (to enlarge / decrease the screen size). I do not want to allow the other gestures (swiping to the left / right etc...).

How can I implement this with Captivate? Is there some way to use JavaScript or some other method?

Thank you very much in advance!