my $UIDholder = "some value";
my $var_ref = \$UIDholder;
print "UIDHolder: $UIDholder\n";
print "reference: $var_ref\n";

##</code><code>##

UIDholder: some value
reference: SCALAR(0x8160e8c)

##</code><code>##

print "Actual value of variable: $$var_ref\n";