nagios_send_service_mail.pl no graph if space is used in service name

[PitoneMaledetto]

Hi there,
thank you for this great notification script.
The only trouble I have is if the service description has a space in the name then the script fails to pick up the associated RRD file.
For example I have a service named Memory which I get notified when it is Warning/Critical with the attached graph however I have another one named Root Partition which notifies without graph.
I have tried to use the use URI::Escape pearl module but without success because my knowledge of Pearl is less than basic.
Any help or advice would be greatly appreciated.
Thank you