user_run Subroutine

  subroutine user_run(comp, importState, exportState, clock, rc)
    type(ESMF_CplComp) :: comp
    type(ESMF_State) :: importState, exportState
    type(ESMF_Clock) :: clock
    integer, intent(out) :: rc

    ! Local variables
    type(ESMF_VM)               :: vm
    integer                     :: myPet
    
    ! for testing update
    type(ESMF_Array)            :: array
    integer, dimension(3)       :: rootList
    character(ESMF_MAXSTR)      :: conv,purp

    ! Initialize return code
    rc = ESMF_SUCCESS

    ! Determine petCount
    call ESMF_CplCompGet(comp, vm=vm, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out
    call ESMF_VMGet(vm, localPet=myPet, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out

    ! Get the import and export States
    call ESMF_StateGet(importState, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out
    call ESMF_StateGet(exportState, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out
    
    rootList = (/0,1,2/)
    call ESMF_AttributeUpdate(importState, vm, rootList=rootList, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out
                          
    ! copy all Attribute information into export State
    call ESMF_AttributeCopy(importState, exportState, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out
  
  end subroutine user_run