Can't get xlswrite to work

[jasim]

Hello there,
I am a new user of GNU Octave and want to use the xlswrite function. I tried
the following example and got an error: 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>> A = [1 5; 3 -0];
>> rstatus = xlswrite('test1.xls', 'A') ;
error: 'r_extnd' undefined near line 171 column 27
error: called from
    xlswrite at line 171 column 3
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

I also tried the example given in the help section of xlswrite and got a
different error:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>> arr = [4 5; 1 3];
>> status = xlswrite('test4.xls', 'arr', 'Third_sheet', 'C3:AB40');
Detected XLS interfaces: warning:  No Java support found (no Java JRE? no
Java pkg installed AND lo
aded?)
warning: called from
    getxlsinterfaces at line 121 column 11
    xlsopen at line 262 column 17
    xlswrite at line 202 column 9

None.
warning: xlsopen.m: no'.xls' spreadsheet I/O support with available
interfaces.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Curiously enough xlsread seems to work (although there are some warnings):

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>> [An, Tn, Ra, limits] = xlsread ('test5.xlsx', 'A1:B2');
Detected XLS interfaces: warning:  No Java support found (no Java JRE? no
Java pkg installed AND lo
aded?)
warning: called from
    getxlsinterfaces at line 121 column 11
    xlsopen at line 262 column 17
    xlsread at line 197 column 11

>> An
An =

   1   2

>> Tn
Tn =
{
  [1,1] = ash
  [1,2] = jas

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
I am using Octave 4.2.0 on a Windows 7 64 bit machine.

Can any one help me? Thanks,

Jasim




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