Different Mass Values

Hi,

I was modeling a structure and also added a block in one corner of the structure. In Simulation, I had added a custom material to the block, to simulate a very heavy component. If we hover the mouse on the block, it shows the actual value which should be. But when we click on Evaluate/Mass Properties for the block, it shows the mass of the block to be 37 Kgs only (which I am assuming is showing the value of the model environment).

My question is, while doing the simulation, what mass value will be taken into account? Please see attached.

Regards,

LS

SolidworksSimulation