dynamically populated checkboxes not saved

Set up dynamically populated checkboxes as specified here http://www.gravityhelp.com/forums/topic/dynamic-checkboxes but gravity forms would not save the values (though displaying the columns in the entries list).
HTML code generated looks perfectly similar to standard checkbox which gets saved.

So there must be something going wrong between displaying the form an storing the input into the database.

Any ideas?

Hi Ptroxler,

You are modifying the form object before it is displayed; however, the form object used by Gravity Forms to process the form submission does not have your modifications. I'm not 100% sure off hand if modifying the form object via the gform_pre_submission_filter to add the newly added checkbox inputs there as well is too late in the submission process; however, that is would be my recommendation.