Changed isRequired but still validating

Hi.
I would like to be able change some fields as required and not required based on specific pages and I am able to change the isRequired state, but it doesn't affect the form validation.
Here is the code I used:

add_filter("gform_pre_render", "set_required");
function set_required($form){

    foreach($form["fields"] as &$field) {

		$field["isRequired"] = false;

	}

    return $form;
}

So I have a couple of fields set to be required in the form editor.
How come the form is validating these fields when I have set all fields to be not required?

Cordially
Vayu

Come on guys - is it supposed to work ?

A Yes or No response would at least give us a direction.

Jim

Here is my code: http://pastebin.com/eHjUTA7F

I tried to remove the zipcode field from the form. It was removed from the form (I do not see it in the form). But it was still going through validation (There was a problem with your submission. Errors have been highlighted below.)

Then I also changed the field's isRequired to false. But The field is still going through validation.

I'm not sure what is the issue here?

btw, the zipcode field has the 'zip code' mask ( I removed the mask. it didn't help )

Please let me know why this is not working.

Thank you,
RB

Hi Chris,

The site is not public. I'm developing on my machine.

Is there a sample code for removing validation on a field?

Do you see anything wrong with my code? I followed all the info I found in the developer docs and other responses in this forum.

Thanks,
RB

See line 10 in http://pastebin.com/eHjUTA7F

unset($form['fields'][$key]);

seriously, no response???