diff --git a/o2web/source/o2_core/o2/xScript/Environment.js b/o2web/source/o2_core/o2/xScript/Environment.js
index d41b8da78bd703ab3ef3ee08c72dc817f1a18f0b..2b9edfa48a8d1cd3bb53b2c3cdb8d5e037529697 100644
--- a/o2web/source/o2_core/o2/xScript/Environment.js
+++ b/o2web/source/o2_core/o2/xScript/Environment.js
@@ -2056,8 +2056,10 @@ MWF.xScript.JSONData = function(data, callback, key, parent, _form){
             }},
             "del": {"value": function(delKey){
                 if (!this.hasOwnProperty(delKey)) return null;
-                delete data[delKey];
-                delete this[delKey];
+                // delete data[delKey];
+                // delete this[delKey];
+                    data[delKey] = "";
+                    this[delKey] = "";
                 return this;
             }}
         };