but why is your minimum withdrawal amt unlimited? should be like 0.001
BTC or 1 1X2coin?

It's unlimited because users can withdraw as much as they wish and as usual on a max no one will withdraw less than 1, 1X2 or less then 1$ in BTC
i guess unlimited is applicable to max withdrawal but for min withdrawal - you should establish a value so players will not ask every time they are in doubt regarding the min withdrawal amt
though no one will withdraw a very small amount of funds on their acct but better put those values on your faq so they can always refer to it and not bothering you the same question over and over again
