New text field in PO line item

Hi,

My last question was rejected. Basically, I know how to add a new text field from OLME-Purchase Order-Text for purchase order-Define text for PO item level. My question is If I add a new TEXT field, do I also need to do the configuration OLME-Messages-Text for message-Define texts for purchase order, to make that field PRINT RELAVAN?

Thanks.....