How to set a value on a hidden required input field.

I have a form that I need to set a value that is stored within the session onto it. I would like the input field to be hidden when a new row is created and just set the value with a value that I have stored with sessionScope.
Is this possible?
Any help would be appreciated.

Frank,
I sure can access the session attribute. I just wasn't sure how to set it. Here is a snippet of my jsp
<af:inputText value="#{bindings.Createdby.inputValue}"
binding="#{backing_Project.inputText3}"
id="inputText3">
If I set the value="" attribute to be say value="#{sessionScope.userInfo.userId}" then how does ADF know to update the CreatedBy column? This is where I got confused. I figured the value="#{bindings.Createdby.inputValue}" had to stay that way in order for the column to be updated correctly.
Basically what I am wanting is to programatically set the userId of the person who is creating the row into the CreatedBy column and then show the user's readonly name when a user edits an existing row.
Any help would be greatly appeciated.
Marty

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