c:\strawberry>set
...
Path="c:\ulisse\dir & test";C:\ulisse\strawberry\perl\site\bin;C:\ulisse\strawberry\perl\bin;

...

_TEST="c:\path\dir & test"



c:\strawberry>cd %_TEST%

c:\path\dir & test>perl -e "print $ENV{PATH}"
c:\path\dir & test;C:\strawberry\perl\site\bin;C:\strawberry\perl\bin;C:\strawberry\c\bin; .....