The only workaround i know of is to type your wanted label into a text box
format it as wanted, put a white or other appropriate color and move the box
over the lable for the data.

"Mohammad" wrote:

I have this data in one cell (0.5µl l-1 C2H4) and i want to make -2
superscript, 2 and 4 as subscript.... in Legend Box!!!
i tried many methods but i am till now not successful..
thanks for who will help me.
Mohammad