I do not believe this can be done as you have asked for it.
I do have a workaround. Create 2 formula fields:
ToText(Minimum({?Parameter})) and
ToText(Maximum({?Parameter}))
Place them on the report where you want them to appear, and format them as bold. Then insert a text object inbetween these two fields and make it say " to ", without the bold letters.
If there is a way to bo this within the formula you posted above I would love to know what it is. Software Support for Macola, Crystal Reports and Goldmine
dgilsdorf@mchsi.com