Double Underline with Text Style in Microstation v8i

I need to set up a text style in v8i that has a double underline. I see in some archived topics that custom linestyles were used by some to achieve this but I don't see in the text styles dialog where I can apply a custom linestyle to the underline. I have tried the method of using overline with a negative value, but as noted in the archived topics, it won't accept a negative value and resets to 0. 

Any suggestions?