update.jspx (roo, mvc) does not pass password field value into the class member

I added a password confirmation field into the User.java, corresponding field in create.jspx and update.jspx. I'd like to perform some password encryption before storing password in a database, so I added a @PrePersist @PreUpdate method in this class. When I add user (create.jspx), everything is ok. When I change user (update.jspx), form returns empty string instead of the entered not-empty confirmation field value. The same problem is with usual(non-password) text field.

User.java:
...
@Transient
private String newPasswd2 = "";

public String getNewPasswd2()

{ return newPasswd2; }

public void setNewPasswd2(String newPasswd2)

{ this.newPasswd2 = newPasswd2; }

@PrePersist
@PreUpdate
protected void encryptPassword() {
String pwd = this.getPwd(), pwd2 = this.getNewPasswd2(); // HERE pwd2 is EMPTY !
...

create.jspx:
<field:input field="newPasswd2" id="xxx_newPasswd2" required="true" type="password" z=""/>

update.jspx
<field:input field="newPasswd2" id="xxx_newPasswd2" required="true" type="password" z=""/>