[SOLVED] Auto Action to send URL to Mailman

I am looking for an easy way to update Mailman when the email address changes. Turns out there are a couple of URLs that when sent to mailman will unsubscribe or subscribe a member. I have tested these URLs and they work perfectly. Unfortunately, I can't seem to get them to work in Auto Actions Code.

For instance, to unsubscribe a member from Mailman, you would send the below URL.
Obviously you would fill in the angle brackets with the correct values.

Type: code
Trigger: OnAfterUserUpdate
Conditional: [var1_email] NOTEQUAL [var3_email]
Method: PHP (create_function)

Doesn't work. What am I doing wrong?

Use the Request action and supply your URL as needed. There's no need to do custom PHP or anything of the sort to send an HTTP request.

Perfect! Thanks for the quick help. I now unsubscribe and then immediately resubscribe to Mailman using two Auto Action requests. Works perfectly. Great substitute for the cb plugin subscribemailman that doesn't work if you don't have CBSubs.