parameter field in WD screen

Hello All,

how to create a parameter field (as if it were in abap selection screen ) i am using the wd component WDR_SELECT_OPTIONS in my component. i want to display a parameter field with the description taken from DDIC. iam trying to use the method ADD_PARAMETER_FIELD of the interface IF_WD_SELECT_OPTIONS.

here i could not understand how to bind this parameter field with DDIC element so that the description, (if possible F4 help)is taken from ABAP dictionary.

can someone please help.

Thanks in advance

Regards

Amarender Reddy B