Change location in qnap



I have a qnap with the owncloudX version. My problem is that I want to change the address of the storage directory “/share/CACHEDEV1_DATA/.qpkg/owncloudv10/data/admin/files” to “/share/CACHEDEV1_DATA/owncloud”

In the file config.php, it tells me that the datadirectory is “datadirectory ‘=>’ /var/www/html/data”, but that path does not exist in my qnap, and when I change that route that interests me, I an error occurs in the application. What I can do?