replace operation --> modification must be an Attribute

I'm trying to change a user password, but the changing object throw this message:

"Error: modification must be an Attribute"

//entry example #1 const entry = { type: 'userPassword', values: Buffer.from("${newPassword}", 'utf8'),};

//entry example #2 const entry = { userPassword: Buffer.from("${newPassword}", 'utf16le')};

    const change = new Change({
      operation: 'replace',
      modification: entry,
    });

    client.modify(
      `${[this.seachAttribute]}=${user}`,
      change,
      (error: any) => {
        if (error) {
          Logger.log('modify error:', error.message);
          reject(error);
        }

        resolve(this);
      },
    );

ldapjs / node-ldapjs

replace operation --> modification must be an Attribute #948