Messages created by rules module: How to se their visibility inside better_messages settings?

Hi there!
I´ve just discovered this module and it rocks! I love the ability to select wich messages should appear as a better message and wich ones don´t.
I would need to know if there´s a way to use this module with rules, selecting in visibiliy settings a specific message that appears because of a specific rule.
(If the rule shows a message only inside a specific url it´s not a problem, but in any other circumstance, there´s no way to selecting those messages).
I´m setting this as a feature request because I think thate´s no way to actually do that, please correct me if I´m wrong.
Thanks!
Rosamunda