Thank you very much for your answer.
I put also that piece off code and is working.
My questions is wy your extension did not put automatically at the end of the page this code
<?php if(isset($_SESSION['captcha_Security_Code_1'])) unset($_SESSION['captcha_Security_Code_1']); ?>
And I have 2 other question regarding the captcha code.
1) I do I not have the option to chose "Not Case Sensitive" like in your video presentation ?
In this case where can I edit the code so to not force and bother users to use captcha in case sensitive case.
I need to put 2 captcha code on the same page, because I have there 2 forms.
How can I do ?
All the best