'+' Character not appering from Text File

Hello,
I am calling in text to a dynamic textbox via loadVars from a text file. Certain characters such as the + character do not display.
Is there anything i can put in the text file to make these display?

the text file looks like this:

&text=C++&

then i load that into a dynamic text box, the + symbols do not display.
i am also looking for a way to display a superscript ‘TM’ symbol.
Thanks for any help.
Q

all font characters are embedded.