How to link button created using 'lpd_cust' tocde which appears on portal and webdynpro component

Created button called "Idea information mass chnage" using Tcode 'lpd_cust' which is added in Portal URL and created web dynpro component to display required values in URL screen. Here missing linkage between button and web dynpro component. When i click on Button my web dynpro component is not getting called. Do let me know how to call web dynpro component when button is clicked. Attaching screen shots of button and web dynpro component.