Pass object or array between 2 custom components

I have a custom component, a 'controller'.. Thats manages some data for an interactive header.

This component does not render, but only passes the data to a 'child' component (view), and the view will render whatever he gets from the controller.

 But how can I pass the data from the 'parent' view to the childview..

In my parentView I set my data and call my 'sub' view like this:

<#assign slides=[1,2,3,4,5,6,7] />

<@component id="sybView" slides=slides />

But how can i get to that data in the subView???? 

This doesn't work:

${env.context.component.getParameter('slides')}