calling text dynamically based on check box

Hi Team

In webdynpro there is a requirement to display text dynamically based on check box. For example we have 4 check boxes, when a user checks 'US'. then text 'This is US' should be displayed. If User unchecks and checks 'India' then US Text should be refreshed and text should be 'This is india'.

actual requirement is like Loop at screen in module pool programming.How we can show this in webdynpro.

Request you to help me on this one.

Thanks and Regards,

Shakeer Hussain