[-  $values = [ [1, 2, 'a', 'aa'], [3, 4, 'b', 'bb'], [5, 6, 'c', 'cc'] ];  -]

 <select id="udf_list" class="udf_list" onchange="SelectUDF()">
 [$ foreach my $item (@$values) $]
     <option value="[+ $item->[0] +]"
             label="[+ $item->[2] +]"
             title="[+ $item->[3] +]">[+ $item->[1] +]
     </option>
 [$ endforeach $]
 </select>

 <select id="udf_list" class="udf_list" onchange="SelectUDF()">
     <option value="[+ $values->[$row][0] +]"
           label="[+ $values->[$row][2] +]"
           title="[+ $values->[$row][3] +]">[+ $values->[$row][1] +]
     </option>
 </select>