FM that Validate the Date on the user specified format

Hi,

My requireemnt is to validate the date entred based on the format specified by me,means id i want to validate the date entred is in form of MMDDYYYY or MM/DD/YYYY. Is there any FM present or do i have to write the code myself?

Moreover I got FM but that checks as per the internal format of the date but not on the way I want.

I have serached the forum as well as the net but fail to get one.

Hope to get a solution.

Thanks in advance.

Pooja