Actionscript display text on screen once an action is performed - actionscript-3

Question

So I need to display a text once an action is performed but even though I tried to do so by using dynamic text and labels, I didn't manage to finish my programming due to errors:
var group:RadioButtonGroup= new RadioButtonGroup ("Question1");
var group2:RadioButtonGroup= new RadioButtonGroup ("Question2");
var group3:RadioButtonGroup= new RadioButtonGroup ("Question3");
var group4:RadioButtonGroup= new RadioButtonGroup ("Question4");
var group5:RadioButtonGroup= new RadioButtonGroup ("Question5");
var counterT:int;
var counterF:int;
submit.buttonMode=true;
counterT=0;
counterF=0;
t1.group = group;
f1.group = group;
t2.group=group2;
f2.group=group2;
t3.group=group3;
f3.group=group3;
t4.group=group4;
f4.group=group4;
t5.group=group5;
f5.group=group5;
submit.label="Submit";
submit.addEventListener(MouseEvent.CLICK,submitanswer);
function submitanswer (event:MouseEvent): void {
if (group.selection == t1) {
counterT==counterT+1
}
else
if (group.selection==f1) {
counterF==counterF+1;
}
}
if (group2.selection ==t2) {
counterT==counterT+1
}
else
if (group2.selection==f2) {
counterF==counterF+1
}
if (group3.selection ==t3) {
counterT==counterT+1
}
else
if (group3.selection==f3) {
counterF==counterF+1
}
if (group4.selection ==t4) {
counterT==counterT+1
}
else
if (group4.selection==f4) {
counterF==counterF+1
}
if (group5.selection ==t5) {
counterT==counterT+1
}
else
if (group5.selection==f5) {
counterF==counterF+1
}

Answer 1

The first thing I see is that you are using the == to set a value. You need to use = when setting values. So like this:
if (x == y) {
counter = counter + 1;
}
or you can just use counter++ like this
if (x == y) {
counter++;
}