AddItem() adds item to all JComboBoxes

Question

I dynamically generate a series of JComboBoxes using a loop.
inside my loop i test if a certain condition is true, if true i add an item.
The problem is that when the condition tests true, the item I add is added to all my dynamically generated JComboBoxes.
Hopefully some fresher eyes can spot my error.
thanks in advance,
Pete
Here's the offending code:
for(int i = 0; i < counter; ++i)
unitField[i] = new JTextField(5);
boxWeights[i] = new JComboBox(vecWeightText);
String tempName = FCProItem.ingredients.getNameOfIngredient();
lblIngredients[i] = new JLabel(tempName);
if(FCProItem.ingredientsi].hasConversiontempName,FCProMenuItem.CONVERSION_FILE_PATH_TEST) )
System.out.println("Add conversion to combo-box for: " + FCProItem.ingredients[i].getNameOfIngredient());
Vector hold = FCProItem.ingredients[i].getIngredientConversions(tempName);
     for(int z = 0; z < hold.size(); z++)
     if(z % 3 == 0)
     boxWeights[i].addItem(hold.elementAt(z));
.... more code...

Answer 1

In my efforts to solve this I've ruled out as mcu as i can think of.
My problem remains, however, slightly improved. Now I add the correct items, yet still to very JComboBox.
Latest code:
for(int i = 0; i < counter; ++i)
               unitField[i] = new JTextField(5);
               boxWeights[i] = new JComboBox(vecWeightText);
               String tempName = FCProItem.ingredients.getNameOfIngredient();
               lblIngredients[i] = new JLabel(tempName);
               boolean flag = FCProItem.ingredients[i].hasConversion(tempName, FCProMenuItem.CONVERSION_FILE_PATH_TEST);
               if( flag )// we have a conversion
                         Vector hold = FCProItem.ingredients[i].getIngredientConversions(tempName);
                         for(int z = 0; z < hold.size(); z=z+2)
                              boxWeights[i].addItem(hold.elementAt(z));