By using Bean Shell Form Binder, we are able to load and update our Environment Variable values by using a form.
Let create a form with each Text Field to represent a Environment Variable in our app and set all the field id to the ID of the Environment Variable.
Then, click on "Properties" tab then set the "Load Binder" and "Store Binder" in "Advanced" page to "Bean Shell Form Binder".
Using the following script for "Load Binder".
Using the following script for "Store Binder".
The resulted form as following.
Sample app for this article can download from APP_update_env-1-20151027104612.jwa.