It's a standard JSF problem:
1. Try to communicate directly between the two beans. Resolve them over the faces context and then call getters / setters. [Answer: Content of a HtmlDialog in my javabean][1]
2. The other possible (but not recommended way) would be to access the setter in an el-expression within the view: `#{data.setMyString(javaBean.evaluateString())}`.
This is possible since within ivy expression language 2.2 is supported (which brought method calls for el-expressions)
[1]: http://answers.xpertivy.ch/answer_link/46http://answers.xpertivy.ch/questions/40/content-of-a-htmldialog-in-my-javabean/46