JLD file and Strings, how to ADD new line to STRING Array to existing jld file

Is posible to add new line with Float but what about Strings Array? Somebody can help ?

Floats works like below:

fid = h5open("my_file.h5","w")
A = d_create(fid, "A", Float64, ((5,5),(-1,-1)), "chunk", (5,5))
A[:,:] = randn(5,5)
close(fid)

# add row
fid = h5open("my_file.h5","r+")
A = d_open(fid, "A")
set_dims!(A, (6,5)) # add new row
A[6,:] = -1.
k,l=size(A)# new size
close(fid)

works nice!

But…

julia> using JLD, HDF5

julia> fid = h5open("my_file.h5","w")
HDF5 data file: my_file.h5

julia> A = d_create(fid, "A", String, ((5,5),(-1,-1)), "chunk", (5,5))
ERROR: MethodError: no method matching datatype(::Type{String})
Closest candidates are:
  datatype(::String) at C:\Users\PC\.julia\packages\HDF5\Zh9on\src\HDF5.jl:1173
  datatype(::HDF5Attribute) at C:\Users\PC\.julia\packages\HDF5\Zh9on\src\HDF5.jl:1156
  datatype(::HDF5Dataset) at C:\Users\PC\.julia\packages\HDF5\Zh9on\src\HDF5.jl:1154
  ...
Stacktrace:
 [1] d_create(::HDF5File, ::String, ::Type, ::Tuple{Tuple{Int64,Int64},Tuple{Int64,Int64}}, ::String, ::Tuple{In
t64,Int64}) at C:\Users\PC\.julia\packages\HDF5\Zh9on\src\HDF5.jl:939
 [2] top-level scope at REPL[3]:1

julia> A[:,:] = string.(randn(5,5))
ERROR: UndefVarError: A not defined
Stacktrace:
 [1] top-level scope at REPL[4]:1

julia> read(fid)
Dict{String,Any} with 0 entries

julia> close(fid)

I must works with Array{String,2} and i nedd add some new rows Array{String,1}
Paul

Somebody can HELP ?
Paul