Animation montage play rate issue

I’m currently working on a melee combat system using the animation montage which contains only one animation.

It works fine when the play rate is set to 1 by default and the notifiers and animation is synced perfectly.

However, when I try to change the play rate of the montage, the attack animation does not scale with it.

Only the notifiers are triggered according to the play rate.

Is there anything else I should take care of first before trying to do this?

Here is the snapshot of my BP that plays the montage"

You can change the play rate of the animation file used by the montage to match the rate of the montage, that should work.