add to field data after submit is pressed
I have searched everywhere and I'm beginning to think it's not possible but...
I have a form with a few text fields, I have an function that is called when the form is submitted which does something with one of the fields to add some text on the end of what data was in there at time of submission, I cant seem to add the new text to the field and then continue to let the form submit. the resulting php file that is the action of the form doesn't see the new data.
is there a way to add or change the data submitted before it goes on to the processing page?
eg. listen for submit and add a footer to a comment entry before it gets processed
hope you can help!