[web2py] multiselection widget with IS_LIST_OF validator

[Manuele Pesenti]

Hi *,
I'm trying to use multiselection widget[1] with IS_LIST_OF validator in 
order to validate single choices but I got a strange error like this:

SyntaxError: widget cannot determine options of no_table.from_tables

here is the code I used in my controllers file where I want to define a 
form using SQLFORM.factory features

form1 = SQLFORM.factory(
        Field('from_tables', 'list:string', required=True, 
notnull=True, requires = IS_LIST_OF(IS_IN_SET(['1', '2', '3'])), widget 
= multiselect_widget, comment = 'Select'),
    )

any suggetion?

Thanks a lot

        Manuele


[1] http://vimeo.com/15886413