SHD0 - Transaction variant

Hi friends,

Can anyone tell me the transaction variant for VL01N. I want to change the BATCH field to display mode. So I when I am looking for transaction variant by F4, its giving message like ' no values for this selection' . Or else can I create screen variant of my own? If I created then what next? shall I assign that variant somewhere or it will apply automatically? Generally I did for VA01 before for some fields by taking the transaction variant which starts with BUS...... So now what to do for this? Please explain me clearly?

regards

Rama rao