How to bind value in a dynamic way?

[Anthony Hong <an...@gmail.com>]

I have a definition list of properties in object.
In input component, I can use #{object[propertyName]} in the value
attribute for value binding. Which protperyName is get from definition
list in a forEach loop conidition.
It works fine with property in object self,but when there is a
composition in base object,
Say object a have a filed object b, which object b contains many other fields.
It faild in #{object[propertyName]} , as it should be
#{object[propertyB][propertyName]}, How to put value binding
dynamiclly?

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Anthony Hong