Advanced Locomotion System V3

Ahoy! I’m having trouble making my character with the ALS anim blueprint to play an animation montage (from a seperate blueprint). Is there an easy change to the ALS anim bp to allow playing a montage?

Or maybe a better question to ask: What would you say is the simplest way to externally (from another blueprint) make the character play an animation once, while at rest, and then resume the idle animation state?