Macro or Function: Best Practice To Reusing A Script?

Hey,

I built a little script to animate an actor repeatable up and down. It works in itself and doesn't need any outside-scope to work. It looks like this: [Click](http://blog.unreal-mobile.com/wp-content/uploads/2017/09/ease-updown.png)

My question is: How would I "store" this script to use it in other actors? I mean, except Copy & Paste.

Since it's all self-referenced, would a Macro BP makes sense? Or rather a Function Library BP and injecting the caller (as _self reference)?

Thanks in advance!