There seems to be a bug where the bool property track in Matinee inverts the values of true and false for a custom blueprint, unless I am mistaken for some reason.
It seems that the values will update if a key is moved on the timeline. I’m not sure if the bug is specific to me, but it would be nice to not have to do that, and also to have an accurate visual representation of the value of the key, as right now it doesn’t change based upon whether the bool is true or false.