$id = $obj->create({id =>999,
					number_of_days_on_the_job=>3,
					number_of_people_shot=>12});
					
$error_string = $id unless $id == 999; 
# overide default die behavour and  
# return the error message if it fails constraints 

# for HTML::Template to 'associate' with
$obj->param('number_of_people_shot');	
print "The known fields are ".$obj->param()."\n";

%errors = $obj->set(	number_of_days_on_the_job => 4, 
						number_of_people_shot => 27);

# or more to the point 
%errors = $obj->set( $CGI->Vars );
# i.e. don't die! also 
# don't update any of the values if there are any errors.
# and collect errors in hash for each error.
						
print $error{number_of_people_shot} 
	if $error{number_of_people_shot} exists;

($dead, $x, $days) = $obj->get(	number_of_days_on_the_job, 
								x, 
								number_of_people_shot);		
# NOTE x is not in the table

print $x	
# prints some nonsense about that it - 'cant get nothing'