diff --git a/www-api/app/Controllers/BackOffice.php b/www-api/app/Controllers/BackOffice.php
index a5adbf8c..91823eec 100644
--- a/www-api/app/Controllers/BackOffice.php
+++ b/www-api/app/Controllers/BackOffice.php
@@ -58,7 +58,7 @@ class BackOffice extends BaseController
 //        }
 
         if ($_SERVER["REQUEST_METHOD"] == "POST") {
-            $in = flatten(json_decode(file_get_contents('php://input'), true));
+            $in = $this->flatten(json_decode(file_get_contents('php://input'), true));
         }
         if ($_SERVER["REQUEST_METHOD"] == "PUT") {
             parse_str(file_get_contents('php://input'), $in);
@@ -82,4 +82,15 @@ class BackOffice extends BaseController
         return $this->respond($this->summaryReturnData($in,$out,[]), 200);
     }
 
+    private function flatten($data, $parentkey = "") {
+        $result = array();
+        foreach ($data as $key => $val) {
+            if (is_array($val)) {
+                $result = array_merge($result, flatten($val, $parentkey . $key . "_"));
+            } else {
+                $result[$parentkey . $key] = $val;
+            }
+        }
+        return $result;
+    }
 }