use jobs;     #local package
use args_xml; #local package

#the array has function name and its arguments in 2 and 3
@args_input = args_xml::read_file($filename); 

my $jobs = jobs->instance();

# @jobIds = $jobs->get_jobIds($ARGV[0]); #actual func. call
@jobIds = $jobs->$args_input[2]($args_input[3]);