diff --git a/thirdparty/index.js b/thirdparty/index.js
index 3cf3446..e18965e 100644
--- a/thirdparty/index.js
+++ b/thirdparty/index.js
@@ -68,6 +68,7 @@ $(window).ready(function () {
             case 'send':
                 return JSON.stringify({
                     "request_type": "0x01",
+                    "data_size" : String(1 + 4 + 4*packet.data.split(' ').length),
                     "additional_header": {
                         "wrd": packet.wrd,
                         "auto_increment": packet.inc,
@@ -147,7 +148,6 @@ $(window).ready(function () {
         });
     } 
 
-
     $('#connect-btn').click(function() {
         if (!apiIsAlive) {
             err_msg_conn("Cannot work without API-Server. Check its health...");