Then you would add this code in your Root .htaccess file (you need to add both of these in order for it to work & they need to be in your Root .htaccess file):
php_value upload_max_filesize 64M
php_value post_max_size 64M
To BPS Custom Code in this Custom Code text box: CUSTOM CODE TOP PHP/PHP.INI HANDLER/CACHE CODE.
Click the Save Root Custom Code button.
Go to the BPS Security Modes page and click the Root Folder BulletProof Mode Activate button.