How do you pass in array of points to a spline mesh component

Changed to

  //Lng/Lat Points converted to UE XY
  let Xnew = ((((MapSizeUE - 1) * Scale) / MapRangeX) * Long) - Xm
  let Ynew = (((((MapSizeUE - 1) * Scale) / MapRangeY) * Lat) - Ym) * -1

Xnew and Ynew

UEx: -48232072.331334196 UEy: -70635940.09160204

Still off.

Thank you for helping with this.