my %destinations;

if ($line =~ /.*Cannot find valid (destination) for type:(.*)=(.*)/) 
{
  $destinations{$type}{$key} = "";
}

##</code><code>##

my %citystate;
my %citycountry;
my %country;
my %airportCode;
my %geonameid;

my %symboltable = (
  citystate => \%citystate,
  citycountry => \%citycountry,
  country => \%country,
  airportCode => \%airportCode,
  geonameid => \%geonameid
);

if ($line =~ /.*Cannot find valid (destination) for type:(.*)=(.*)/) 
{
  $symboltable{$type}{$key} = ""
}