Add instance difficulty to Minimap text string?

[Zagrei]

Hey, I'm working with a self-modified version of iMinimap. Basically, I removed all of the icons and replaced them with text strings, such as 'LFG' when in a que, or 'MAIL!" when you have mail (duh), and made the tracking menu show when you right click the minimap.

What I want to know is if it is possible to put a '+' next to the 'LFG' string when I am in a Heroic instance, and hide it when I am in a Regular difficulty one. I have tried looking in the code of other minimaps, but none of them have anything helpful (that I have noticed, anyways). I was thinking it would look like 'LFG+' for Heroic, and 'LFG' when in a Reg.

If someone could give me a helping hand, that would be quite dandy Thanks in advance!