Help! Quiz - need to count score at the end

Question

I have a working quiz but I want to know how to get the score of the number of correct answers the person got but I can't seem to figure out the code for it. This is my code below. Can someone help me?
stop();// movie clip waits on buttons
gloss_mc._visible = false;// set the gloss initially to not visible
score_int = 0;// score on the quiz is initially zero
// button functions
q1_btn.onRelease = function() {
    scoreQuiz_fnc("1");
q2_btn.onRelease = function() {
    scoreQuiz_fnc("2");
q3_btn.onRelease = function() {
    scoreQuiz_fnc("3");
q4_btn.onRelease = function() {
    scoreQuiz_fnc("4");
function scoreQuiz_fnc(ansSelected) {
    trace("scoreQuiz_fnc ("+ansSelected+")");
// define answer key
answerkey_arr = new Array();
answerkey_arr[1] = '2';// the answer to the question on frame 1
answerkey_arr[2] = '4';// the answer to the question on frame 2
answerkey_arr[3] = '3';// ... etc.
answerkey_arr[4] = '4';
answerkey_arr[5] = '3';
answerkey_arr[6] = '1';
answerkey_arr[7] = '3';
answerkey_arr[8] = '4';
answerkey_arr[9] = '1';
answerkey_arr[10] = '2';
glosskey_arr = new Array();// create array of gloss responses
glosskey_arr[1] = 'The correct answer is: Congenital heart defect.';
glosskey_arr[2] = 'The correct answer is: Four areas of the heart are defected because "tetra" means four. ';
glosskey_arr[3] = 'The correct answer is: Two left valves because there is only a right and left valve.';
glosskey_arr[4] = 'The correct answer is: Ventricular Septal Defect because this is when there is a hole (septum) between the right and left ventricles..';
glosskey_arr[5] = 'The correct answer is: Babies because this condition congenital meaning at birth.';
glosskey_arr[6] = 'The correct answer is: There is not enough oxygen carried within the blood which causes a discolouration in infants.';
glosskey_arr[7] = 'The correct answer is: Heart murmur because this condition occurs at the heart.';
glosskey_arr[8] = 'The correct answer is: After crying, during bowel movements or the occurrence of kicking legs in awakening.';
glosskey_arr[9] = 'The correct answer is: Shunt because you cannot place the other objects in a heart.';
glosskey_arr[10] = 'The correct answer is: Heart.';
function nextQuestion_fnc() {
    gloss_mc._visible = false;// hide the gloss
    nextFrame();// advance timeline to the next question
// score the answer selected by user
function scoreQuiz_fnc(ansSelected) {
    trace("For question "+_currentframe);
    trace("scoreQuiz_fnc("+ansSelected+")");
    //if the answer key for this question matches the answer selected
    if (gloss_mc._visible == false) {
        if (answerkey_arr[_currentframe] == ansSelected) {
            trace("Correct");
            score_int = score_int+1;//add one to the score count
            nextFrame();// go to next frame
        } else {
            trace("Incorrect!");
            // show the gloss
            gloss_mc._visible = true;
            gloss_mc.gloss_txt.text = glosskey_arr[_currentframe];// insert gloss from the array
            // end if statement
            trace("Score is now "+score_int);
}// end of function

Answer 1

Try this
Name the dynamic text box in var not at Instance name
You will find it in properties panel .By selecting the dynamic text field you will have some properties like var,single line ....ect
or
Try this one
this is your code : score_txt.text = score_int;
try this :score_txt = score_txt+1;
where  score_txt is the instance name or the var name you are assigning to the dynamic text field where you will display the score.
Note: Change all of the dynamic text field name "score_int" in the script in to score_txt ,Because you have changed the dynamic text field to score_txt at the beginig of the script also you have score_int = 0.change heare also.
If your problem is solved mark this as Answered