Hi,
Wel, by all means, you discovered the way to do it
Format, Bar Styles, Text, select the field.
But "to make it stick..." ? Text will not make the bar longer (that depends
on duration and timescale alone, and you will have to select a very small
font (Forlmat, Text Styles).
I don't think it's always nice, but you asked for it

)
HTH