Thank for the solution, but i need fully autonomous form.
But i find other alternative with Caldera Form and Caldera Custom Field (after long research),
So if other people want to do a autonomous post form, i give you my solution :
After create a form on Caldera Form, create variables (which can include html code, form field and other variable), with the different form field and text like that : Imgur: The magic of the Internet
Now, in processing, create a “Save as post type”, and into content, you can choose the variable which contain all the others variable and some HTML code like that : Imgur: The magic of the Internet . It’s tedious, but it work.
thank you for your help