when you have a template, including e.g. 10 times nearly the same value,
e.g. you collect the queue size of a databasepool
the we defined :

queue of

{DB1}

queue of

{DB2}

queue of

{DB3}

queue of

{DB4}

queue of

{DB5}

queue of

{DB6}

queue of

{DB7}

queue of

{DB8}

queue of

{DB9}

queue of

{DB10}

importing the template into 400 hosts.
But not all hosts have 10 DatabaseConnections. some have 5, or 10, or 7.

therefore I'd like define the name of the DB at host level (and this is possible via macro)

But I'd like also disable items e.g for DB9 and DB10 via macro.

possibly I could define a macro value like DISABLED and the this item wold be disabled.