Bidet attachment install (water valve in tank)

I am moving into a new home in Stonefields on Friday 23 January. I would like to have a non-electric bidet attachment installed. The water shut-off valve is inside the cistern. I was thinking of something like this bidet attachment: https://www.fruugo.co.nz/slim-toilet-bidet-attachment-universal-adjustables-water-pressure-bidet-for-toilet/p-233006422-498357284?language=en&ac=bing&msclkid=3a715a44d3a61a1c9759332e11a570d3&utm_source=bing&utm_medium=cpc&utm_campaign=Catch%20All%20PMax%20Cross_NZ&utm_term=2322924472898641&utm_content=Catch%20All%20PMax%20Cross%20NZ I have not yet purchased the attachment as I need to know if it will work first.