Check Captcha Validation

[kmkben]

Hello, Thank you for your bravely work.
I am using the bundle in my project in Symfony 6, Everything is working well, Configuration works well, the validation is okay except one thing: I want to compare the captcha generated to the one in input and print a flash message if it doesn't matter.
But I can't have this value in session except the captcha I added in the login form, from an other form like contact form this session is null and I don't know how to get this value.

Is there any tips for this ?