Convert 0FISPER to dd.MM.yyyy Format

Hi,

I want to get the last day of the month that I have entered to Prompt as a 0FISCPER in Webi 4.1 SP4 with using BICS query.

Value of UserResponse is return as Month Year format, for example "JUL 2015".

How can I convert it to dd.MM.yyyy format (01.07.2015)?

So, I would be able to use the LastDayofTheMonth function to get the last day.

My best Regards,