I'm trying to completely remove a variable from an MMOItem on the server side.
In the documentation, I see this:
Removing Variables: in order to remove one or more existing variables you will need to set those variables to NULL, using the SFSUserVariable.setNull() method;
When I try to do this, the variable becomes null, but the key is not completely removed from the MMOItem.
What should I do to completely remove the variable key from MMOItem?