s_IP = 'http://httpbin.org/anything';
i_time = 2;

s_request = '{"jsonrpc":"2.0","method":"hello","id":0}';
s_request = {'data1',s_request,'data2',s_request}';

options = weboptions_test('KeyName',{'Access-Control-Allow-Origin','data'}, ...
                    'KeyValue',{'*','hello'},...
                    'RequestMethod','post',...
                    'HeaderFields', {'Content-Type','application/json'},...
                    'Timeout',i_time);
                    
res = webwrite_test(s_IP, s_request, options)

options_t = weboptions('KeyName',{'Access-Control-Allow-Origin','data'}, ...
                    'KeyValue',{'*','hello'},...
                    'RequestMethod','post',...
                    'HeaderFields', {'Content-Type','application/json'},...
                    'Timeout',i_time);
                    
res_t = webwrite(s_IP, s_request, options_t)