Setting up completion code generation

Question

Step 5 for setting up to display the completion code says
On the second of the two new pages (i.e., the second to last page), add the following in a php code window (i.e., dragged from the right side to the center/page)

$completion_code = value('VA02_01');
html('<h1>BESAMPLE COMPLETION CODE: '.$completion_code.'</h1>');

But when I add it in the php code window, it says "Warning: The function html() is not suitable or allowed in the PHP for Processing Responses."

What do I do?
I realised setting up and generating codes in SoSci survey is really inconvenient.
Kindly help

Answer 1

Please make sure to trag an element "PHP Code" from the right into the questionnaire.

The error message tells that you're currently using the "process answers via PHP" input on the bottom of the page.