Hello, I have a small problem and I want to disable a field of a subform while it is empty or is null, I try from the Form Action - On Load and from the Field Actions, but I have not been successful, these are the 2 codes that I put:

Form Action - On Load:

if Item.Producto == null

{

disable Item.Valor ;

disable Item.Cantidad ;

}

else 

{

enable Item.Valor ;

enable Item.Cantidad ;

}

--------------------------------------------------------

Field Actions

if row.Producto == null

{

disable row.Valor ;

disable row.Cantidad ;

}

else 

{

enable row.Valor ;

enable row.Cantidad ;

}

Thanks