Expressions always require a lot of PlaceholderAPI variables in order to fulfill powerful features
So you'd better download the Cloud Expansions you need.
The link below is where you can find the variables
player.hasPermission("default.user")
player.getHealth() >= 20%player_health% < 15
%server_tps% < 18
Note: " " is necessary
player.getName() == "Arasple""%checkitem_mat:diamond,amt:5%" == "yes"