too long

I'm trying to run the following query:

$sth = "UPDATE `users` SET users_password VALUES (:hash) WHERE users_id = $users_id";
$q = $conn->prepare($sth);
$q->execute(array(':hash'=>$hash));

But Im getting the following:

Uncaught exception 'PDOException' with message 'SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'VALUES ('$2y$12$Ao46iC7W9Lj8FFfSmAaeoeQs9O.3QRVtDbHAyvpzH90YIUN61ma8i') WHERE us' at line 1'

Any ideas?

(and yes the code isn't in a try, catch block yet just experimenting at them moment with a few things)

change this

$sth = "UPDATE `users` SET users_password VALUES (:hash) WHERE users_id = $users_id";

to

$sth = "UPDATE `users` SET users_password = :hash WHERE users_id = $users_id";