This CVar is where your LFG role selection information is saved.

Possible Settings

1 

Leader

2 

Tank

4 

Healer

8 

DPS

To have a combination of more than 1 setting, add the numbers together.

ie. Healer, DPS & Leader = 4+8+1 = 13

Changing this setting

In-game, you can open the LFG tool via hitting i, then changing your setting.

or

In-game, type the following

/console lfgSelectedRoles setting

or

You can exit wow, open your character's Config-cache.wtf file, and add the following line:

SET lfgSelectedRoles setting

Patches

Patch 3.3.0 (08-Dec-2009): Added