How to write a letter of support from New Zealand parents?

As follows. Hello. We are XX's parents-XX, XX. XX has now received an admission notice from a university in Australia. As parents, we support XX to go to Australia for further study and are willing to subsidize all the expenses of studying abroad for XX free of charge. We have worked hard for many years and accumulated considerable capital, which is enough to pay for studying in XX. We are willing to sponsor XX to study abroad for free. I hope you can approve XX's application for studying abroad so that XX can report to the school on time. We will be very grateful to you.