OpenLitespeed ubuntu server doesn't change the max_vars_input

So, recently I have setup a OpenLite Wordpress image with vultr cloud and then made some changes in the php.ini file there. All of those changes were applied expect the value max_input_vars which I wanted to change to 7000 but it is stuck at default php value of 1000.
I have tried to restart the server many times and follows some tutorial from the internet but nothing seems to work.
Loaded Configuration File /usr/local/lsws/lsphp73/etc/php/7.3/litespeed/php.ini


Default PHP version on this server is PHP7.4 or PHP 8.0, have you changed the handler to lsphp73? I just want to make sure you are updating the correct php ini file