3D FlipBook - Flipbook page tracking with Google Tag Manager

Is there any working implementation of tracking 3D flipbook pageviews with Google Tag Manager.
Tested with different methods to push the page path to data layer so we can pass it through to GA4 but nothing worked. ( It triggers the event but doesn't pick the page path)

//Pushing 3D Flipbook data to DataLayer
window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
'event': 'flipbook_view',
'page_path': ' location.pathname + "/" + scene.ctrl.getPageForGUI()'
});

*scene.ctrl.getPageForGUI() doesn't pass the page location

Please let know if there's a working method to get page path info and push it to datalayer.

Thanks!