I am trying to print the value what it is getting after some line my code is purely simple

$ENV{DENALI_ROOT}=rel2abs($ENV{DENALI_ROOT});
my @dirs=splitdir(canonpath($ENV{DENALI_ROOT});
print Dumper(@dirs);
#print $RealBin;
[download]

I want to print $ENV{DENALI_ROOT} through perl debugger.Yes I ran it manually like perl -d <my file name>