Firing an event on a particular page in Google Tag Manager

In Google Tag Manager I'd like to fire an event when a particular page is seen. This is for a completed signup page - a conversion.

In Google Tag Manager I have my base UA tag fire on all pages.

I then created a new UA tag "Subscriptions" to track events: track type events. I then filled in my category, action and label values for the event.

However, it's the rules that seem to be tricky.

When I went through the signup process in order to see the conversion page, here is all the info from Google Analytics debug in the JavaScript console:

Account ID : UA-xxxxxx-2 Page Title : Example Company | Your Account has been created | Premium Host Name : secure.example.com Page : /secure/common/callback?` https://secure.example.com/secure/common/callback?id=2c92a0fb41ee0b8c0142062c06fd6c89&tenantId=3415&timestamp=1390480077277&token=WByfk6aU4JX1EJSchx4XDMnp50XX8aL7&responseSignature=OTg2OWY4MTcwMDVmZmRiYzI3NWI2N2IxOWJmNTYxNGI=&success=true&refId=2c92a0fb43bdc33a0143bf122e6d3ebb&field_passthrough1=:[email protected]:[email protected]&field_passthrough2=P&field_passthrough5=%3Alnen%3ANmmeFirstNAme%20meLastName%3AA1123%20mainst%20Avenue%3AA2%3ACtPhiladelphia%3AStON%3APcM6G%202T8%3ACn&field_passthrough3=3a5e49b5-85ed-4c86-99af-761004f7db06&field_passthrough4=true&signature=OWM1NjY5MGZkMWVjNjI5NjJiYjk3MmVhOWU3ZjkzNjA= 

I'd like to fire the "Subscriptions" event track tag. I tried the following rule but had no success:

{{url}} contains: /secure/common/callback?.
{{url path}} contains: /secure/common/callback?.

My questions therefore are:

1. How would I fire the submissions event when this page is visited?

2. Why is the event not firing now - isn't the logic sound? If the URL contains /secure/common/callback? then it should fire, right?