Workflow triggered by a time clock on a form?

I want a workflow to email a User if a timer added to the Order form hits a certain value.

However, I cannot get a workflow condition to listen to the Contract Expiry Timer that I inserted into the form. When I try to find the clock listed as a potential condition in the workflow it does not appear. What can I do to set a workflow to be triggered by the clock hitting a certain value?

See workflow here:

And the Timer on the form:

Any advice appreciated!