how can I offload more than one part of a whole array ?

If I have a global array A, which contains all my data. I may use different parts of A in an offload sections. How do I just copy content of parts (more than one) I am interested in to mic but not copy all the content of global array. I have an example and how can I make it work? Thanks,

      PROGRAM   MAIN
      IMPLICIT NONE
      integer N
      PARAMETER        (N=10)
      DOUBLE PRECISION, allocatable:: a(:)
      integer i
      allocate(a(N))
      do i = 1, N
         a(i) = i*0.1
      end do
      call mytest1(a,N)
      STOP
      END

      SUBROUTINE  mytest1(a,n)
      IMPLICIT NONE
      INTEGER n
      DOUBLE PRECISION a(*)
      !dir$ offload_transfer target(mic)
     &     in(a(2:3): alloc_if(.TRUE.) free_if(.FALSE.))

      !dir$ offload_transfer target(mic)
     &     in(a(5:7): alloc_if(.TRUE.) free_if(.FALSE.))

      !dir$ offload begin target(mic) nocopy(a(1:n))
      write(*,*) a(2:3)
      write(*,*) a(5:7)
      !dir$ end offload
      RETURN
      END

I can compile it, but when I run it, it gives: offload error: address range partially overlaps with existing allocation.

 Is there any way to copy more than one parts of a huge array to offload and do the calculation in offload ?

Thanks