F4 help for date field in ITS

hi all;

I was working on ESS Leave Request, i am using the standard program SAPMWS20000081H and the service template WS20000081.

Now in the EP view i am unable to get the F4 help for the date field 'Absence From' & 'Absence To'. i have checked the data element used it is 'DATS'.

How to get the F4 help in the view, please help me its of high priority.