Permission of MPDF file

Question

Good afternoon friends,

I am creating folders dynamically according to the user’s password.

 $dir = "relatorio/".$password;
 if(!file_exists($dir)){
 umask(0);
 mkdir($dir, 0777,true);

 }
 $path = "relatorio/".$password."/".$nomeFormulario.".pdf";
 $mpdf->Output($path, "F");

 //$mpdf->Output();
 header("location: sucesso.php");

 exit();

This code runs every time the user opens the system, as soon as it opens the system and fills in a different questionnaire, is created inside the report folder, a folder with its password and then inside this folder is generated a PDF using the MPDF, but only the first pdf file gets permission 777, the rest does not stay.

Any hint ?

Gracias :)