by adding unneeded complexity you've lost what is happening
why you wrote this way:
my ($dfHost, $dfPort, $dfUser,$dfPassword)
= map {$fRight->Entry( -textvariable=>$_ )->pack(-side=>'top',-
+pady=>3)}
qw/\$user \$password/;
you assign 2-element list to 4 variables, so last two are undefined.
But more to the point, if you'll write
$fRight->Entry( -textvariable=>\$user )->pack(-side=>'top',-pady=>3
+);
$fRight->Entry( -textvariable=>\$password )->pack(-side=>'top',-pad
+y=>3);
your code works as expected.
I can not explain it, but I know it
:)
(addition) qw/\$user .../ does not do what you want
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