I believe there may be a typo in
docs.dhtmlx.com/api__dhtmlxform_ … event.html
[b]Example[/b]
myForm.attachEvent("onBeforeBinding", function (id, values){
//your code here
return true;
});
This should probably read :
[b]Example[/b]
myForm.attachEvent("onBeforeDataLoad", function (id, values){
//your code here
return true;
});