Newbie - Getting value of a radio button

Hi

I've been using flash only for some animated buttons yet.
Now i wanted the user to be able to choose between some radio buttons (i simply inserted the flash ui control - is that ok, or is there perhaps a better way?!?) and when he clicks on "ok" a variable is set depending on what he has chosen...

I siply need to check the value of the radio buttons,... i tried

the "getValue()" function like this:

if(option1.getValue()==true){
img="00";
}
else if(option2.getValue()==true){
img="01";
}
else if(option3.getValue()==true){
img="02";
}
else if(option4.getValue()==true){
img="03";
}
else if(option5.getValue()==true){
img="04";
}
else if(option6.getValue()==true){
img="05";
}
else if(option7.getValue()==true){
img="06";
}
trace(img);

I guess this is really stupid, isn't it...?
perhaps it's something with the paths?
Thats a thing i didn't get... (if anybodey knew a good tutorial i'd be pleased when he would give me the link)

Thanks