asterisk users - Feb 2004 - passing variables to a macro

I was wondering if this would work....

set a variable (varX) in macro-test
call another macro [macro-subroutine]
have varX available within [macro-subroutine]


[macro-test-1]
; ${ARG1} - extension
setvar(var1=foo)
macro(subroutine,${ARG1})

[macro-subroutine]
do something with varX


Or do you have to pass all variables you want to have available within a
macro when the macro is called ?
like this:
macro(subroutine,${ARG1},${varX})

thanks

--Lance