Sending Product Custom Field fails/not working

[hai]

Hello,

I have an issue, where custom product field is not parsed to email.

I have a template called 'xx VPS Activation' , placed in Product/Service Messages category.

The content of the email is:

Main IP Address: {$service_dedicated_ip}
SSH username: {$service_username}
SSH Password: {$service_password}

Virtual tuner addresses:
{$service_custom_field_virtip}

I have a product which has  custom field:
'virtip|Virtual tuner addresses'


HOWEVER,

When i go here and try to 'Send Message' and choose the 'xx VPS Activation' template, the '{$service_custom_field_virtip}' is blank in the sent email, it does not send the values from this field. I do not understand why it doesn't work.