I am trying to find a way to display html in a combo box. The list data is being returned from the server via QueryReadStore. I am trying to take two pieces of data and make one of them bold, but doing this:

return item.i[attribute] + ', bar ';

When the list is rendred it show up like this:

City , <b> bar </b>
City2, <b> bar </b>
City3, <b> bar </b>

where i am trying to just BOLD bar.
like this:
City , bar
City2 , bar
City3 , bar

Seems filtering select can do this, but the combobox cannot. Any suggestions?