How to create multiple databases in Neo4j 5.24.2?

I have tried opening a cypher shell to create a new Neo4j database and failed as follows:

neo4j@neo4j> :use system
neo4j@system> CREATE DATABASE demo;
Unsupported administration command: CREATE DATABASE demo

I attempted to find some solutions in stackoverflow, some says that I should uncomment this line in neo4j.conf:

initial.dbms.default_database=neo4j

I did it and restart my Neo4j server but this problem was still there.