Embed Field Labels in Email notification link

Embed Field Labels in Email notification link

I need to use the content of a field on the form as part of a URL to be included in the body of one of the notification Emails. I tried using the field label with no satisfaction at all. For example:

Basic URL:  https://dashboard.websitedomainname.com/
Form Field ${zf:Number} Value:  3645879

I tried creating the link as:  https://dashboard.websitedomainname.com/${zf:Number}
It looks like this: https://dashboard.websitedomainname.com/%24%7Bzf%3ANumber%7D

What I need is:  https://dashboard.websitedomainname.com/3645879

Any suggestions, ideas or assistance will be greatly appreciated.

Thanks,

Lee