Capture parameter in small letters instead of capitals

Hi ABAP gurus,

I have a selection screen with an input parameter as STRING used to indicate the output path of the resulting .txt file from my report.

The problem I have is that the value in the string is always applied in capital letters which means the directory is created using capitals instead of what was input at the selection screen. It's not a big problem but I would just like to know if there is any way of keeping the strings value as it was entered in the beginning.

Any suggestions?

Regards,

Simon.