Enabling a field when a radiobutton is selected.

Hi,

I have two radiobuttons. When the second radiobutton is selected a field 'date' needs to be enabled for input else it should be in disabled state. I need this as soon as the second radio button is selected ie, without an enter.

i am not able to use at selection-screen by assigning user command to the second radiobutton as a usercommand can't be assigned to a second radiobutton.

Please help.

Regards,

Soumya.