I’m starting to learn how graphs work in mssql. Read on this site https://learn.microsoft.com/ and trying to execute every code whitch starting from https://learn.microsoft.com/en-us/sql/relational-databases/graphs/sql-graph-overview?view=sql-server-ver16.

But when i try to execute any code from this section https://learn.microsoft.com/en-us/sql/relational-databases/graphs/sql-graph-shortest-path?view=sql-server-ver16 like

SELECT PersonName, Friends
FROM (
    SELECT
        Person1.name AS PersonName,
        STRING_AGG(Person2.name, '->') WITHIN GROUP (GRAPH PATH) AS Friends,
        LAST_VALUE(Person2.name) WITHIN GROUP (GRAPH PATH) AS LastNode
    FROM
        Person AS Person1,
        friendOf FOR PATH AS fo,
        Person FOR PATH  AS Person2
    WHERE MATCH(SHORTEST_PATH(Person1(-(fo)->Person2)+))
    AND Person1.name = 'Jacob'
) AS Q
WHERE Q.LastNode = 'Alice'

gives an error message

Incorrect syntax near 'GRAPH'

what am i doing wrong?

Microsoft SQL Server 2017 14.0.3401.7