Hi Monks!
I have a question here regarding values coming into a sub routine. I have this external module and I share it with about 4 other programs I have. I call this sub routine in this module from all these 4 programs, lets say;
From program A:
build_url( $account ,$transaction, $location);
From prgram B:
build_url( $account);
From program C:
build_url( $account ,$transaction);
From program D:
build_url( $account ,$transaction, $location);
Now this is what the sub rutine inside of the mudole is expecting: 
sub build_url
 {
  my ($account ,$transaction, $location) = @_;
  ....

[download]

Now, I need to pass 2 extra values into this sub routine, the new values expected inside of this sub routine will be like this:
sub build_url
 {
  my ($account ,$transaction, $location, $fname, $lname) = @_;
  ....

[download]

So my question here is what is the best way to do this to avoid the values of these 2 extra variables added to the call to this sub routine when the values are not in the order that the sub “build_url” is expecting?
Here is how the 2 new variables will be added to the call to this sub.

From program A:
build_url( $account ,$transaction, $location, $fname, $lname);
From prgram B:
build_url( $account, $fname, $lname);
From program C:
build_url( $account ,$transaction, $fname, $lname);
From program D:
build_url( $account ,$transaction, $location, $fname, $lname);
Now the sub build_url with the 2 extra variable added:
sub build_url
 {
  my ($account ,$transaction, $location, $fname, $lname) = @_;
  ....

[download]

See where some of the values would be in the wrong order? Should I make sure that I always pass 5 expected values to this sub routine even if I have to pass blank values, but preserving the order that the code is expecting them?
Thanks for the advice!

In reply to Values passed into a sub routine by Anonymous Monk

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