Adding items to a Dynamic Combo Box

i created 2 combo box named combo1, combo2
Then i wrote a code, that during runtime 5 combo boxes will be created as an array of combo1
5 more combo boxes will be created as an array of combo2
Now i want to insert a particular data in first 5 combo boxes Combo1 and i have done the same

Now when a change of item is made in combobox1(First combo box of Combo1) a function should be called and it should insert the same data in first item of Combo2.
When a item is changed in Second icombo box of Combo1 the second combo box of Combo2 should have the item of

Please help me of how to do it

Moved

Private Sub Combo1_Change(Index As Integer)

is where the program will go when something is changed in Combo1. Index will tell you which box in the array was changed.