It doesn't appear that GetHosts actually returns explicitly. Trying assigning your functions to temporary variables that you can debug first: 
my $get_hosts = GetHosts($_, \%data);
my $get_new = GetNewFWRules($_, \%data);

print "Do I equal what you think i do? get_hosts = '$get_hosts'\n";
print "Do I equal what you think i do? get_new = '$get_new'\n";

my %do_for = (
    get_hosts => $get_hosts,
    get_new_fw_rules => $get_new,
);

[download]
If for example, the functions are supposed to return arrays, you might need the following: 
        my %do_for = (
            get_hosts => [GetHosts($_, \%data)],
            get_new_fw_rules => [GetNewFWRules($_, \%data)],
        );

[download]

In reply to Re: Hash reference undefined somewhere? by wind
in thread Hash reference undefined somewhere? by bowei_99

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