Hello, 

i cant find a way to get mass properties of  a single body in multibody part, my code looks like :

public class FBody2
{
    Body2 body;
string document;
    View view;

public Body2 Body { get => body; set => body = value; }
public string Document { get => document; set => document = value; }
public View View { get => view; set => view = value; }

public FBody2(Body2 body,string document,View view)
{
        Body = body;
        Document = document;
        View = view;
}
}


...
oBodies = new object[] {(Body2)body.Body};//body is a custom object
DispatchWrapper[] bd = (DispatchWrapper[])ObjectArrayToDispatchWrapperArray(oBodies);
swMassProp.AddBodies((bd));
MassProperty swMassProp = swViewModel.Extension.CreateMassProperty();
double mass = swMassProp.Mass;
...

public  DispatchWrapper[] ObjectArrayToDispatchWrapperArray(object[] SwObjects)
{
int arraySize = 0;
    arraySize = SwObjects.GetUpperBound(0);
    DispatchWrapper[] dispwrap = new DispatchWrapper[arraySize + 1];
int arrayIndex = 0;
for (arrayIndex = 0; arrayIndex <= arraySize; arrayIndex++)
{
        dispwrap[arrayIndex] = new DispatchWrapper(SwObjects[arrayIndex]);
}
return dispwrap;
}‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

if i dont set bodies, i get all part mass, seems to be correct like this, but as soon as set some body, result will be always 0...

some help?