How to set Value of field on postBack="true", as when i select the value it gets refreshed and selected value comes as Null

[drosenbauer (Devin Rosenbauer)]

I’m fairly sure it’s that your Section type is “datatable” for the section containing the inputs. That type isn’t intended to be interactive.

Also, where did you find “onchangeValue”? I’ve never seen that before and am surprised it works.