Double the size of meshes in BP

Hey Guys,
how can I make a Blueprint who doubles the size of many meshes at once?

just set the scale in the construction script of your BP?

Are you talking about many meshes within that blueprint or many other meshes that are in the level?

Former you would do a find all actors, and then do a for loop and set their scale.
Later you would just scale the scene root and everything inside would scale with it.