How to a acknowledge an MC inside an MC

K For my racing game I have movieclips inside other movie clips and I was wondering How u like aknowledge it… Like example…

onClipEvent (enterFrame) {
if(_root.car.hitTest(_root.hotspot6)){
_root.road.easeXY(307, 315)
} else {
play();
}
}

That is the hittest for 2 moviecips onscreen…not in any other MC… how do I do it when ones in the MC and another on the main screen.
Example… lets pretend that hotspot6 is in a moviecip “trigger”. Do i edit my command like this…

onClipEvent (enterFrame) {
if(_root.car.hitTest(_root.hotspot6.trigger)){
_root.road.easeXY(307, 315)
} else {
play();
}
}

K i know i havnt done the best job explaining wat i need but if u understand plz… answer<!-- / message -->