Cant able to change column name

Hi Expert,

I have a requirement to change the column header name in the cross tab. I have gone through some link  for the same but it haven't worked Changing Default column Name in Design studio.

I have used the below code to append the text to the existing name of the column header.

.sapzencrosstab-ColumnHeaderArea.sapzencrosstab-HeaderCellDefault:nth-child(3):after{

content:"SOH";

}

My cross tab:

I need to append or replace the Sales Qty to be SOH.

Thanks!

Regards,

Ramesh