Change Field Header Text of Table Maintenance

Hello,

After succesfully creating Maintenance Screen for my Z table, I could maitain it in SM30/31. But the Header Text of the Table fields appearing in the maintenance screen are inherited from the domain from which it was declared. For example, I created a field named "MyBarcode" with type of "EAN11". In SM30/31 Screen the Header Text appears as "EAN/UPC".

How and where to change it?

Thanks,

Sid