Plain vanilla swap

can you please explain-

How " _ In a plain vanilla swap- If interest rates decrease, the swap has a negative value to the fixed rate payer _ ".

If you’re paying a fixed rate of 6.2% and LIBOR’s at 6.3%, you’re expecting a positive cash flow on the next payment. If LIBOR drops to 6.1%, you’re expecting a negative cash flow on the next payment. The present value of negative payments is negative.

ok.thank you.

D’accord.