Unit? Module? same difference, is it not?

Sorry to be so pedantic but it may be relevant to solving your problem. When you said in your post

I have global var in main unit:

 @EXPORT = qw(
   $LoggedOn_user_id
   $VERSION = '0.0.1';
 }
 our $LoggedOn_user_id;
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do you mean that code is in the 'main' part of package manageusers. At the top maybe before the subroutines declaration ?

poj