Not understand what you mean. What you use - inline edit or form edit.

If you use form edit module you can use defaultValue (work only in add mod) - look into the docs.

Regards

Tony

How can I insert a hidden field with a predefined value on insert/edit? Something like:

{name:'my_hidden_field',...,edittype:"hidden",editoptions:{value:"my_predefined_value"}}

Thanks