Dynamically Creation of input field in webdynpro

Hello Experts,

I am new to webdynpro.

I have a requirement to create the input filed dynamically for material.

Requirement:- I have to button in my screen "+" and "-" button.

                      after execution  while i will click on + button one input filed should be created automatically and while i will clicik on

                      - button the newly creaed inputfield should be deleted from the screen.

Coulld anybody help me on this.

it would be great if somebody can share any solutin or sample code.

Thanks in Adv...