Не могу удалить из вектора

class TModelAnswer
{
private:
     char FAnswer;
     float FProbability;
     AnsiString FExplanation;
     char GetAnswer() {return FAnswer;};
     void SetAnswer(char newAnswer) {if(newAnswer != FAnswer) {FAnswer = newAnswer;}};
     float GetProbability() {return FProbability;};
     void SetProbability(float newProbability) {if(newProbability != FProbability) {FProbability = newProbability;}};
     AnsiString GetExplanation() {return FExplanation;};
     void SetExplanation(AnsiString newExplanation) {if(newExplanation != FExplanation) {FExplanation = newExplanation;}};
public:
     __property char Answer = {read=GetAnswer, write=SetAnswer};
     __property float Probability = {read=GetProbability, write=SetProbability};
     __property AnsiString Explanation = {read=GetExplanation, write=SetExplanation};
     TModelAnswer()
     {
             FAnswer = 'h';
             FProbability = 0.9;
             FExplanation = "hello";
     }
     ~TModelAnswer()
     {
             FAnswer = ' ';
             FProbability = 0;
             FExplanation = "";
     }
};

vector<TModelAnswer> ModelAnswerArray;

        TModelAnswer answer[3];
        for(int i=0; i<3; i++)
        {
                ModelAnswerArray.push_back(answer[i]);
        }
        ModelAnswerArray[1].Probability=0.1;
        ModelAnswerArray.erase(ModelAnswerArray.begin()+1);

ModelAnswerArray.pop_back();