how to reset values in module pool?

Hi ,

I have a requirement to refresh all the values from the screen on pressing the reset button.

I have one main screen which have the reset button and four subscreens, and each subscreen has different set

of fields.i am clearing the values in each subscreen. But the values are not getting cleared,

When I debugged i saw the values are getting cleared but it is not getting assigned in the screen.

Kindly help.