I have a Lexmark X

Question

I have a Lexmark X 6100,my ink level indicator told me i was low on both color and black ink. I replaced both cartriges with old one that had plenty of ink left. Now when i start printing the indicators show a yellow trianglewith an exclamation sign in the middle on both ink level indicators.Both the color and black printing are comming out OK,how do i change it so the correct levels are showing.