Bug in On-Transaction Scrip-ing?

Hi,

I’m trying to get at a transactional custom field value from a scrip
but it’s not working. I wrote a CLI-based script which has no problem
extracting the custom field value from the transaction but the
Scrip-based approach cannot access the value. Here is a the scrip
which fails:

Conditon: On Transaction
Action: User Defined
Template: Global template: Blank
Stage: TransactionCreate

Custom action prep. code:

return 1;

Custom action cleanup code:

my $Transaction = $self->TransactionObj;
my $CustomFieldValues=$Transaction->CustomFieldValues("Billable");
$RT::Logger->error( "Parsing transaction custom fields:" );

while (my $CustomFieldValue = $CustomFieldValues->Next) {
    $RT::Logger->error( "Value: ".$CustomFieldValue->Content );
};

$RT::Logger->error( "Done!" );
return (1);

And here is the CLI-based tool which is able to read the
transactional custom field values:

#!/usr/bin/perl -I/home/rt/lib

use RT;
use RT::Transaction;

RT::LoadConfig();
RT::Init();

my $transaction = new RT::Transaction($RT::SystemUser);
$transaction->Load(9072);

my $CustomFieldValues=$transaction->CustomFieldValues(“Billable”);
print “Parsing custom fields …\n”;
while (my $CustomFieldValue = $CustomFieldValues->Next) {
print "Value: " . $CustomFieldValue->Content . “\n”;
};

print “Done.\n”;

Can anybody offer any suggestions on why the Scrip fails but the CLI
script succeeds?

Thanks in advance,

Chris Snell