%Myhash = (

  'SuperUser' => { 
             	'Username' => '1',
              	'UserPage 0' => {
              					'UserPage_num' => '0',
                			    'data' => {
	                			    'field1' => {
		                			    'name' => 'Version',
		                			    'Size' => '1'
	                			    },
	                			    'field2' => {
		                			    'name' => 'Length',
		                			    'Size' => '6'
	                			    },
	                			    'field3' => {
		                			    'name' => 'Number',
		                			    'Size' => '8'
	                			    },
							                			    
	      						},
      						},
					      						
						      
				'UserPage 1' => {
              					'UserPage_num' => '2',
                			    'data' => {
	                			    'field1' => {
		                			    'name' => 'Version',
		                			    'Size' => '4'
	                			    },
	                			    'field2' => {
		                			    'name' => 'Length',
		                			    'Size' => '8'
	                			    },
	                			    'field3' => {
		                			    'name' => 'Number',
		                			    'Size' => '8'
   			    },							                			    
			},
		},
  And so on....
 
##</code><code>##

206  foreach $item (keys %Myhash){
207	 if ($item eq $My_Value)	{
208	 foreach $iteminitem (sort(keys %{$Myhash{$item}})){
209	 foreach $iteminitem1 (sort(keys %{$Myhash{$item}{$iteminitem}})){
210	 if ($iteminitem1 eq 'name' &&  $user_number == $Myhash{$item}{$iteminitem}{$iteminitem1}) {
211	 my $User = $iteminitem; 
212	   }
213	  }
214	  }
215	 }
216	 }