Using a value to add to xml line

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Hi I am trying to pull the value of $epname into another part of my script, a second if statement. However when I try to use in the second if statement I get an error saying I have not declared the $epname variable. I have the print statement between the two if statements as a check. It prints the correct value (it is printed several times but i think this is because its in another loop). What am I doing wrong here.

  # Get name                         if($tmpName eq 'Episode_Name'){ $
+epname = $tmpValu;}

print "$epname - Title";
                        
# Change Title  
                            if($tmpName eq 'Title_Brief'){
$newTitle =  $epname;
$xml->{Asset}->[0]->{Metadata}->[0]->{App_Data}->[$appkey]->{Value} = 
+$newTitle;
                }
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Re: Using a value to add to xml line by AnomalousMonk (Archbishop) on Nov 10, 2016 at 20:00 UTC
As hippo has pointed out, you haven't really shown us any code. I'm guessing, however, that you have declared and are using `$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 = $epname; # variable does not exist here` [download] If you want a lexical `$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] Give a man a fish: `<%-{-{-{-<`	[reply] [d/l] [select]
Re: Using a value to add to xml line by hippo (Archbishop) on Nov 10, 2016 at 17:00 UTC
Have you declared $epname anywhere? You have not shown that in the provided extract.	[reply]