I have a use case where a Customer will select X amount in a Collection on page 2, this will then need to populate the same amount into a separate collection on page 5 and pass the value from one of the fields to the header (Custom HTML field displayed as a h4 to mimic a Header) 

Is there any way to do this out of the box, as from my investigation i have identified that it may be custom JavaScript using an eventlistner on the Next button from the 1st collection, to call a function that will pass the 'propCount' value of the Collection, then append the value to the other Collections. 

Has anyone done this or can point me in the right direction.