hello monks, I am parsing a yaml file and its very complex taking reference, has anyone tried it before ,pls help me with this, i have read much documentation but to no use.

#my main.pl where i parse the yaml file

$input_file = $ARGV[0];
print "Input File = $input_file\n";
# parse the yaml file 
$yaml_input = YAML::XS::LoadFile("$input_file");

#these are my parse functions :

sub parse_yaml_run_tgt($)
{
    my ($yaml_input) = @_;
    $run_target_platforms = $yaml_input->{run_target_platforms};
    @run_target_id = ();
    @run_target_controls = ();
    @run_target_con_info = ();

    my $i = 0;
    for my $run_index (@$run_target_platforms)
    {
        $run_target_id[$i] = $run_index->{run_target_id};
        $run_target_controls[$i] = $run_target_id[$i]->{target_control
+s};
        $run_target_types[$i] = $run_target_controls[$i]->{run_target_
+type};
        $run_target_active[$i] = $run_target_controls[$i]->{run_target
+_active};
        $run_target_con_info[$i] = $run_target_id[$i]->{target_connect
+ion_info}; 
        $run_target_hostname[$i] = $run_target_con_info[$i]->{run_targ
+et_hostname}; 
        $i++;
     }
}

sub parse_yaml_standalone($)
{
    my ($yaml_input) = @_;
    $standalone_exec = $yaml_input->{standalone_execution};
    $utpsm_exec = $standalone_exec->{utpsm_executable};
    $se_hostname = $utpsm_exec->{hostname};
    $se_tgt_list = $standalone_exec->{target_list};
    $se_rulesfile = $standalone_exec->{rulesfile};
}

#and this is my yaml file :


################################################
# Input file for uTPSM regression test control #
################################################

test_control:
  standalone_execution: yes 
  code_checkout: no #yes/no 

rules_file: 

- rules_file_id: &rulesid_01 
   name:         
   hostname: 

- rules_file_id: &rulesid_02
   name:         

run_target_platforms: 

- run_target_id: &runid_01
   target_controls:
     run_target_type: simulator    #simulator, emulator , hardware
     run_target_active: yes
   target_connection_info: 

standalone_execution:  
  utpsm_executable:   
    hostname:    
  rulesfile: [*rulesid_01]
  target_list: [*runid_01]

...
[download]

i have parsed everything except for reference

rulesfile: [*rulesid_01]
  target_list: [*runid_01]
[download]

i know many of the fields won't make much sense asking the question but i have edited coz these files are very huge , if still its not very readable pls let me know i will further reduce the number of fields. pls help to solve the reference, i want to know how to write a variable which will be pointing to my run target parameter from my standalone execution.