Webscenario HTTP Proxies in Templates

Step 1: Create a Template to test your HTTP Proxy environment.
Step 2: Create a Webscenario in this Template.
Step 3: Try to use {HOST.HOST} in the HTTP Proxy field in your Webscenario
Step 4: Create a couple of Host with this Template and you will see that you can't use the Host Macros in this field