Making search non case sensitive

Hi,

I have implemented a search help which I have copied from standard help ‘PREM’. I have created a Database view, taking that View I have created an Elementary search help and I have assign the elementary search help in the collective search help ‘ZPREM’ which is copied from ‘PREM’. In the search help I have two fields (NACHN, VORNA), which are case sensitive fields.

How to make it Non Case Sensitive?

Regards,

Jitendra