I just want to save the data in my form to my HD

All I want to do is save the data in my form to a location on my HD. I can do this in Acrobat by going to Forms > Manage Form Data > Export Data. I want to do this by clicking a button on the form. All I can see is to use the exportData method and it is not working. Is there a way to do this? A button I can click on and a dialog opens asking where to save the file and name it.