Mel B's ex-husband, Jimmy Gulzar, claims she goes to great lengths to block their 18-year-old daughter from visiting him.
Gulzar -- who was married to Mel from 1998 to 2000 -- was out in WeHo Thursday, and claimed Mel B carried a grudge when it came to his relationship with their daughter.
He claims Mel B gave their daughter an ultimatum ... which involved cops and the law.
As for who Gulzar is siding with now ... well, take a listen.
We reached out to Mel B's people ... so far, no word back.