is there a way to use object fields in a message subtype?

For example, I want a message subtype that tracks when the state is changed (that's what open already does) but I don't want that message as a simple 'The invoice has been validated', I want something like: 'The invoice has been validated for 900$ ' where the '900' is the value of an object field, let's say amount_total from account.invoice

PD: something different to track_visibility='always'