select-options filed entries are converted into upper case automatically after
any user enters some value and this causes to a problem becasue
some entries are lower case in the db table. Therefore user search matches no results
How can I solve this problem by saying ignore case sensitiv.
The select-options fields were created by IF_WD_SELECT_OPTIONS' method
ADD_SELECTION_FIELD. Of course it has parameter -> I_LOWER_CASE
but it doesn't work properly.