Please post an introduction in the proper thread here and let us know a bit about yourself:
It is one of the few rules of this forum.
Second: Do a search using the search function. There is an older thread asking this exact thing. Read it (it’s from a lesbian but it’s same thing, wanting to change someone’s sexual orientation).
The short answer, yes, it can work but it entirely depends on his strength of will in regards to his sexuality. If he isn’t the least bit interested than no matter what magick you use you will have a lot to overcome. Lust spells work best if there is at least some attraction to work with.