drag and drop with user feedback

I created a drag and drop game where users drop sections on a map and instantly receive feedback if they are correct or incorrect.  I've got the correct feedback working correctly but I can figure out the incorrect part as it is below nothing happens.  Any help is greatly appreciated

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stop();

_global.counter=1;

_global.totalquestions=10;

Slogan1="Question 1";

Slogan2="Question 2";

Slogan3="Question 3";

Slogan4="Question 4";

Slogan5="Question 5";

Slogan6="Question 6";

Slogan7="Question 7";

Slogan8="Question 8";

Slogan9="Question 9";

Answer1="Box_A";

Answer2="Box_B";

Answer3="Box_C";

Answer4="Box_D";

Answer5="Box_E";

Answer6="Box_F";

Answer7="Box_G";

Answer8="Box_H";

Answer9="Box_I";

function init(){

_root.slogan.text=Slogan1;

_global.answer=Answer1;

_global.counter++;

}

function checkAnswer(guess){

if (guess==_global.answer){

_root.slogan.text=eval("Slogan"+_global.counter);

_global.answer=eval("Answer"+_global.counter);

_global.counter++;

//_root.result.text="You Are Correct";

feedback("correct");

eval("_root." + guess)._alpha=70;

eval("_root." + guess).active=0;

if (_global.counter > _global.totalquestions){

_root.complete.text="Quiz Complete";

_root.slogan.text="Quiz Complete";

  }

}else{

//_root.result.text="You Are Wrong";

feedback("incorrect");

  }

}

init();

function feedback (response){

  _root.correct._visible=0;

  _root.incorrect._visible=0;

  clearInterval (_global.feedTime);

   if (response=="correct")

   {_root.correct._visible=1;

     }else{

   _root.incorrect._visible=1;

   }

   _global.feedTime=setInterval (clearFeed, 1000, response);

   }

function clearFeed(response){

  eval("_root."+response)._visible=0;

  clearInterval (_global.feedTime);

}