Article written by Euan C.
Description : Array types are currently not supported with property access directly on animation nodes
Potential Impact: Limited: Anim BPs that attempt to use property access to set array typ…
https://dev.epicgames.com/community/learning/knowledge-base/BLLZ/unreal-engine-tech-note-property-access-on-array-types-in-anim-nodes-fails-to-compile