FilesMatch htaccess syntax pain for apache 2.4

someone please tell me why this doesn't work in .htaccess? #grant access if word-processing format Require all granted #deny access for double file extensions Require all denied If I look at this any longer I'll have pulled all my hair out! So it's not blocking e.g ' extensions.conf' from being uploaded.. the regex is right so it must be the syntax for Apache 2.4 htaccess.. restrictions in the htaccess above this block are being respected (e.g. no indexing) so the file is being parsed. Does this syntax look correct? *edited to actually ask a question