New Post: How to get textbox values from Custom CLR dialog and use inside CustomAction

let me rephrase my question.
i am doing

project.DefaultDeferredProperties += ";AppVersion";

then

private void Next_Click(object sender, EventArgs e)
        {
            session["AppVersion"] = comboBox1.Text; 
            MSINext();
        }

now when i do

private static void Project_AfterInstall(SetupEventArgs e)
        {
             var appVersion = e.Data["AppVersion"];
             //or
             //var appVersion = e.Session.Property("AppVersion");
            //or
           //var appVersion = e.Session["AppVersion"]
        }

none of them fetching data from CLR dialog.
So what i am missing here,I went to custom_ui , deferred actions and setup events sample but still not getting how data is passed from CLR dialog to after_install.

Btw thanks a lot for helping me out.