Inflation in Venezuela
The value of the Venezuelan bolivar has been decreasing at an extreme rate, and inflation reached over 1 million percent in 2018. This means that how many bolivars you get for your New Zealand dollars can be dramatically different from one day to the next.
The extreme inflation has also led the Venezuelan government to put strict regulations in place for remittances, which means that the rate you get is likely to be considerably lower than the rate on the black market. This has led to a surge in people using illegal methods to transfer money into the country, which can come with a hefty jail sentence.