[ https://issues.jboss.org/browse/SEAMPERSIST-67?page=com.atlassian.jira.pl... ] hantsy bai commented on SEAMPERSIST-67: --------------------------------------- Oh, my God, this discussion was posted 1.5 year ago. I think the collectionType is not the only problem. A big problem is the converter. I have read the codes of Seam 2 entityConverter, for the MultiSelectCheckBox/MultiList, it will convert between List<PK> and List<Entity TYPE>(and other types, such as Collection, Set, array). But the object converter in Seam 3 does not provides such a features. In fact, in the last two years, I have spent much time on JSF2/Richfaces4/Seam3 in projects, and some problems still can not be resolved. Personally, I had got every bad experience when use Richfaces 4 and Seam 3. And later, I gave up Richfaces 4 rich components, and used pure JSF+ Richfaces A4j+ Twitter Boostrap + Seam3. Now I am trying to give up JSF in new website based application, and use REST(backend)+JS/AngularJS(frontend) . I think in future I will use JSF in internal app or backend admin for some application. Hantsy -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira