Webutil not printing pdf file when it is created

Hi I need your help with this.

I am using Forms and Reports Relase 11.1.1.4.0, weblogic 10.3.4, server Red Hat Enterprise 5.0 with kernel version 2.6.18-186.el5.

the system calls a forms to fill the parameters in order to send it to the reports then, using run_report_object, runs the report to generate a pdf file, once the file is generated; reports return the control to the forms and I am using webutil pll to print the document, this is the instruction webutil_host.host('lp -d ipaddress /path_file/file_name.pdf'); that ip address was added on the linux server in order to print the document