Target problems

my healer dos'nt seem to target what my main is targeting for some reason ive changed it to the home key in aquire targets target in swtor settings and think i've got it setup ok be grateful if some1 could tell me what mistake's ive done thanks

http://www.privatepaste.com/0070f3f1cf

well i feel like an idiot my 9yr old son figured out what i'd done wrong, i had done the steps 1 at a time instead of all in 1 action and now it works perfectly but my graphics are struggling so ordered myself a radeon 6870

Do not feel bad I've done the "forget step" as well. Also Graphics card upgrades are very common in SWTOR.