Rules Of Poker

This is a Poker Rules question?

Last night I was Playing Poker with some friends and we decided to play a new version of Omaha Hold Em’ . We played Omaha with low in your hole wild. So to get to the point I had a Royal Flush with my wild card and my friend had 5 of a kind with 2 wild cards? Who wins, does it just matter on what the house rules are? I said there is no 5 of a kind and they said there is when you play with wild cards. If I am wrong, that’s ok I just wanted other opinions on rules??

In most wild card games the 5 of a kind would be the best hand.

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