If I define some user macro, for an instance like this:

it should be able to expand that value on the HOST to that "value's" value.
Currently, that expansion is failing like this:

I would expect that user macro final value after such expansion like:

{$USER_MACRO1} <== {HOST.NAME} <== HOST_ABC
{$USER_MACRO2} <== {$GLOBAL_MACRO1} <== WHATEVER_VALUE_DEFINED_IN_GLOBAL_MACRO