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    It is very important to note that variables are not shared
     between threads, all variables are per default thread local. 
     To use shared variables one must use threads::shared.
    
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    use threads::shared;
    share($returnn);
    
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    Doesn't work at all... :(
    Doesn't work at all... :(
    ...
    It works!
    It works!
    ...etc