Problem setting form property in action

I have a problem setting form property in action.

ACTION

FORM

JSP

ERROR
javax.servlet.jsp.JspException: Failed to obtain specified collection
at org.apache.struts.taglib.html.OptionsCollectionTag.doStartTag(OptionsCollectionTag.java:176)

Why my form list property is null ?

[ November 14, 2008: Message edited by: Federico Artebani ]
[ November 14, 2008: Message edited by: Atlantide ]

I think you need an indexed getter and setter for your list property in addition to the unindex ones you have. That is, make methods with the same names that take in additional parameter, and int. Then use that int to either get the value from the list at the int position or set an individual record at the int position.

Mmmm, I don't know.

After this instruction the list is correctly saved into form

After return mapping findforward, in the jsp, ALL properties of action form are null.

You don't provide the action mapping; is it a redirect="true"? Is the form a session or request form?

Try this, this helps..

Put the "list" in scope , either session or request , like

and use "name" attribute to access this , like

and make sure that , there are getter and setter for "id" & "descriz" in class MyRecord( the bean you are using)..

It is not a redirect = true and I have a session scope (attribute scope not defined in action mapping --> default scope=session)

I will try with session.setAttribute ...

And change your display name , As per JavaRanch Name Policy ..

With session.setAttribute it works but I don't like it very much.

Why it doesn't work with :

Post your action mapping for above action from struts-config.xml, and one doubt, you post the code for MyForm form & you are retrieving in action class as

Is MyActionForm is derived from MyForm ??