Add one more constructor to B1RunAction.hh in Basic exampleB1

Basic exampleB1
When attempting to add one more constructor to B1RunAction.hh like

B1RunAction(int) {};

I get a message
error C2280: “G4Accumulable::G4Accumulable(void)”: attempting to reference a deleted function
Is it possible to fix the problem?

Regards, Anatoly