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Does this work in CF8

$this->data("FIELD_NAME", "SOME VALUE", true);

In CF7 it will set the value of FIELD_NAME to: SOME VALUE

Max in my case this works only if the field is empty. If it has any value (in my case it's session data when i do a reload on a multipage form) it does not work.

*Actually it sets the value in the data (i can see it if i activate debug) but does not set the value in the field.

Also the clear session i used in CF7 does not work for me here.

unset($_SESSION['gcore']['testform']);

what's the order of your action and view ? you must run the code BEFORE the field is displayed, if you use a PHP action then it must be placed ABOVE the field

Good to know Max, i always had a php on top on my forms to handle any field value, i will move it last.

Any advise about the unset($_SESSION['gcore']['testform']); for CF8

My goal is to clear the form and it used to work for CF7

having PHP on top is correct

When do you want to clear the form ?

in my case it's session data when i do a reload on a multipage form

What do you mean by a reload here ? how does your form work ?

You are right Max i misunderstood. Placing the php at the very top works for setting variables, thank you.

Now for the form clear, I am testing a multipage form so here is an example:

Page 01 has some fields Field 01, Field 02, Field 03 (might have other irrelevant fields) and Next Button

Page 02 has a php check

// get values of Field 01 & Field 02
if (empty(Field 01) && empty(Field 02)) {//redirect to Page 01}

if both fields are empty it redirects to form start (Page 01) and displays a message, or if you just refresh F5 when you are at Page 02 it will redirect/reload Page 01 *(and show a message Your session has timed out or your tried to access a wrong page.)

In both cases the form will be filled with the previous data, if entered, in CF7 i could clear the form before the redirect with:

unset($_SESSION['gcore']['FORMNAMEHERE']);

Is there a way to do that with CF8?

try to use this PHP code at the top of page 1:

$this->data = [];

Does it solve the issue ?

Yes it does thank you Max

you are welcome, let me know if you find later that it breaks something else