PHP7 error

?Hi, I need to update my server to PHP7 and there are errors with the User Meta Lite plugin when I run WP Engine’s PHP7 compatibility checker, please could you fix these. The errors are:

FILE: /nas/content/live/superconnect/wp-content/plugins/user-meta/lib/init.php
——————————————————————————
FOUND 2 ERRORS AFFECTING 2 LINES
——————————————————————————
92 | ERROR | Global with variable variables is not allowed since PHP 7.0
116 | ERROR | Global with variable variables is not allowed since PHP 7.0
——————————————————————————

Many thanks