How to scale a placeable object in-game?

I want to scale object in-game before we build while I want to show units of that object centimeters or inches.
Does anyone know how to do that or can u suggest me a tutorial ?


I’m not sure if i get your question correctly or not…
you can change scale this way : SetRelativeTransform | Unreal Engine Documentation

Lets say I have a plane has measure 40cm x 100cm i want to modify that both directions while its showing what is the new scale. I hope I explained the situation clearly.