How to get the model size (solid geometry)

HI，

In the parts module, how to get the maximum size（L，W，H） of the parts as the function of the automatic work piece in the mold module?

I tried using the model checking function in the Overall Size Model parameters

However, it is not ideal, the size is often not the maximum size of the physical geometry

TKS~!

(No related modules are installed)（Could not understand this parameter）