We've been working with the Sustainability site on getting webform submissions to return a chart upon submit. Gluing the two modules together requires using a Custom URL redirect in the Webform > Form Settings > Custom URL field.
I did need to patch webform using references here: http://drupal.org/node/764762#comment-3035596
For our testing, we were using this string to get us to the chart for the node we were on:
internal:node/4/webform-results/chart