how to run mpi program with vs studio and oneapi?

Question

Hello.I am using vs studio and intel oneapi to create fortran program. But now I have to use mpi with fortran code,and I have done things like the example.In the vs studio, the code can run with 1 process .But when I run code with the command "mpiexec -n 4 mpitest.exe",the code can't run success. So I want to know how to deal with it.Tanks for your reading and I'm looking forward to you answer.