I'm not very familiar with HTML, but how do you insert the new dm-text-outline into a string? I tried just adding "-dm-text-outline: < 1 > < black >" but had no luck.
(Ignore the spaces, had to put those so the forum didn't think it was actual html, hehe.)</1>
For anyone curious or who had a similar question, I was able to use the SPAN function to insert CSS features into a text string.
"<SPAN STYLE='-dm-text-outline: 1 #000000'>" |
It's a CSS property, so look up some CSS fundamentals and it should be pretty obvious how to use it. You can either use the style attribute of an HTML tag to change this property inline, or use this property in the Style section of the map element in the DMF editor.