Commerce Donation page I want to create a button on each node to a donation page. The button needs to send the title of the node to that page, I have managed to do this.

I have a product type donation. I modify the form price with line item and setup a form where you can select different donations values.

The problem is that I need to find a way to include that title in the donation form so It can be passed to cart.

I have tried commerce add to cart function to alter that, but it doesn't work.
Made a Product Type: Donation
After that I created Products of: 2 USD, 10 USD etc.
Created a donation page of form: /donation/*
When I reference the donation page from the node page the links look like this: /donation/%nid
On the donation page I create a custom form and there I modify the submit function.