Paul,100% working ... I copy my subform to your and it is working perfect, although it is not working on my pdf.Anyway, I will give it a try and if I didn't manage I will upload it so you can have a look at it (if you kindly agreed).Thanks and best regards.Your help is much appreciated.

Hello PaulI tried you example and it works perfect for tables not subform.I tried this:xfa.form.resolveNode(" form1.page1.Sub_a.lottary.Row1").access = "readOnly";and evenform1.page1.Sub_a.lottary.Row1[0].access = "protected";but in avail, any commentBest regards

Hello Paul,Thanks for your reply, What I actually want is not to hide the row or the subform, but to keep it visibleand inaccessible to the end-user (disabled/grayed out) if possible.Thanks and best regards

Dear All,I manage to resolve the issue, I just pass the this.parent as it's the current row as arrgument to the function which take care of manipulating the values.Greetings

Hello Paul, I tried to set values to subform using a global function called at the change event of the drop down as follows:function calcTax(currRow){var ii = form1.Page1.CommoditySection.Commodities.resolveNode("CommodityTax["+currRow+"]").rawValue;app.alert(ii);}whenever I call the function it doesn't execute ... unless you are at the first row...How to correct this.Best regards

Hello paulDoes this apply for subforms that created at runtime.Best regards