As hippo has pointed out, you haven't really shown us any code. I'm guessing, however, that you have declared and are using  $epname as a lexical variable within your "loop," and so the variable name vanishes when the loop is exited:

while (some_condition_is_true()) {
    ...
    my $epname = some_string();
    ...
    print "for debug: \$epname is '$epname' \n";
    ...
    }

$newTitle = $epname;  # variable does not exist here
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If you want a lexical  $epname to exist and have the value it was given in the loop when it's outside the loop, do something like:

my $epname;

while (some_condition_is_true()) {
    ...
    $epname = some_string();  # do NOT declare new variable
    ...
    }

$newTitle = $epname;  # variable exists, has value here
[download]