Using C++ Builder 6

I have a form with a Tmemo object in which I can enter numbers (from 0 to 10 but thats irrelevant)


Now I would like to loop through those numbers in the memo box and depending on whether they are bigger or smaller then 5 perform an action.

Yet for some reason it dont seem to work.

for(int i = 0; i >= this->Memo1->Lines->Count; i++)
   s = this->Memo1->Lines->Strings[i].ToInt();
   if (s >= 5) v++;
   else o++;
   sum = sum + this->Memo1->Lines->Strings[i].ToInt();
then I place the the values of v and o in a textbox. Ie it shows how many numbers are more and less then 5.