string functions in function module

Hi guys,

I am directly coming to the point that I am facing....

In fact I created a table in ddic where one field having its own domain I selected the lower case option too...

means now the input in that table in case sensitive. If the entry in that table is like 'Mumbai' then it will generate error if we send import parameter as 'MUMBAI'.

Now coming to the point:

I created a Function module too where the select statement was written based on that particular field (case sensitive).

Now whenever I run the F.M. the input value i.e. 'Mumbai' is automatically converted into uppercase string like 'MUMBAI' resulting no output.

Please help to overcome this situation.

Which string function I should use to prevent the F.M. from converting the import parameter into uppercase string.

Thanks in advance.