AOE Ability Help

So, an error occurred and it showed this message which I do not get at all

GetPartsBoundsInBox is not a valid member of Workspace “Workspace”

After so long I now know what I did wrong, I put “Parts” instead of part. Thanks for the help though.

After I thought I figured it out, I’m now getting an error which shows this text

Unable to cast Dictionary to OverlapParams