Time node using property - Error "ConfigError: Invalid property"

[soleous]

Sup peeps,

I have a timer helper and I am sending notifications prior to it finishing. I'm doing this using the time node with property "attributes.finishes_at" and a negative offset.

This works well however, because the attribute "finished_at" doesn't normally exist I am getting regular "ConfigError: Invalid property" in node red.

This is somewhat cosmetic, but is there anyway to stop this error?

Thanks,