You seem to have an issue with array usage. This code is suspect:

  $response=($s->var_bind_list->{$_});   
  @final1 = $response;

  $response2 = ($s->var_bind_list->{$_}); 
  @final2 = $response2;
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I assume the right hand side of each expression returns a list of values. When you assign those lists to the scalars $response and $response2, the scalars get the last element of each list on the right.