I'm looking to use an imported constant via a variable that holds it's name. So Net::SNMP exports a constant named INTEGER - I want to be able to use/access that constant via a variable that holds the name of it. With the below code I get

Inside snmpset OID:1.3.6.1.4.1.9.9.68.1.2.2.1.2.22, HOST:1.1.1.1, STRI
+NG:mystring, TYPE:INTEGER, VALUE:1
ERROR  (1.3.6.1.4.1.9.9.68.1.2.2.1.2.22 1.1.1.1 mystring): Unknown ASN
+.1 type [INTEGER].
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but it works fine when I call snmpset this way:

snmpset("1.3.6.1.4.1.9.9.68.1.2.2.1.2.22","1.1.1.1","mystring",INTEGER
+,1);
Outputs:
Inside snmpset OID:1.3.6.1.4.1.9.9.68.1.2.2.1.2.22, HOST:1.1.1.1, STRI
+NG:mystring, TYPE:2, VALUE:1
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But statically putting INTEGER in there stops it from being modular - I'd have to make a function for each variable type I would need to set. How would I pass $bah in such a way that it was actually passing the constant?

#!/usr/bin/perl
use Net::SNMP;
my $bah = "INTEGER";

snmpset("1.3.6.1.4.1.9.9.68.1.2.2.1.2.22","1.1.1.1","mystring",$bah,1)
+;

sub snmpset {
  my $oid = shift || die "No oid passed to snmpset\n";
  my $host = shift || die "No host passed to snmpset\n";
  my $string = shift || die "No community string passed to snmpset\n";
  my $type = shift || die "No value type passed to snmpset\n";
  my $value = shift || die "No value passed to snmpset\n";

  print "Inside snmpset OID:$oid, HOST:$host, STRING:$string, TYPE:$ty
+pe, VALUE:$value\n";

  my ($session, $error) = Net::SNMP->session(
      -timeout => 5,
      -hostname  => $host,
      -community => $string,
      -port      => shift || 161
   );

   if (!defined($session)) {
      printf("ERROR ($oid $host $string): %s.\n", $error);
      #exit 1;
      return -1;
   }

   my $result = $session->set_request(
      -varbindlist => [$oid,$type,$value]
   );

   if (!defined($result)) {
      printf("ERROR  ($oid $host $string): %s.\n", $session->error);
      $session->close;
      return -1;
   }

   $session->close;
   return $result->{$oid};
}
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