Help to Buy ISA and Cash ISA

Hi I had set up a help to buy ISA 6 years ago and continue to pay into it every month. Last tax year I opened and almost maxed out my Cash ISA. This year I have opened a new cash ISA. Am I doing something wrong here? What are the inter plays between H2B and Cash ISA, as the responses on similar have been quite unclear Thanks

Hi George Baker-Jewell,
You have done nothing wrong.
You can open a new cash ISA every year if you want to, but you can only open 1 lifetime ISA.
Please have a look here:
Individual Savings Accounts (ISAs)
Thank you.