Sieve notify variables not working with body?

[Bambero]

Hi,

I want to send notification like this:

if body :text :matches "*" {
           notify :importance "3"
               :message "[NOTIFY] ${1}"
               "mailto:test@example,com";;
}

The notification works but the variable ${1} seems to be empty.

But in this case:

if header :matches "Subject" "*" {
           notify :importance "3"
               :message "[NOTIFY] ${1}"
               "mailto:test@example,com";;
}

Everything works correct.

Regards,
Bambero