How to display the dollar symbol in a User defined field

Hello experts

I would like to know how to display the dollar symbol ($) in a user defined field.

I have created a User Defined field in the Journal Transactions - Rows. This field is of type 'Units and Totals' with a structure 'Amount'. I programmatically enter amounts in the field with the SAPbobsCOM.JournalEntries object correctly. But I can't figure out why the dollar signs do not show beside the amounts in the newly inserted column.

Thanks for your help.