allow macro in discovery items "New Application" name field

For a discovery rule, under item prototype, rather then selecting from the list of applications or typing a fixed "New Application" name in. I would like to use a macro variable so the Application that the discovery items are associated with is dynamic.

For example, in the item prototype i have:

Name: mysql.variables {#VARIABLE} for {#SOCK}
Key: mysql.variables[{#SOCK},{#VARIABLE}]

I want the application field to be dynamic based on the {#SOCK} variable e.g. New application: MYSQL GLOBAL VARS - {#SOCK}

This means all the items specific to this mysql sockets are nicely grouped under the Application name when looking in "Latest data".