7. Section 87(1)(b) is certainly one of the grounds under s 87. Nevertheless, its proper application is, in my opinion, fairly limited. It might more generally be appropriate in relation to an application to cancel a permit, rather than in relation to a requestor's proceeding for an amendment. I think the sort of case it is meant to cover can be seen in the City of Springvale v Kydas & Ors [1990] 4 AATR 317. That was a decision that Ms A H Smith, who was then a member of the Administrative Appeals Tribunal (forerunner of this Tribunal in relation to planning matters). She was dealing with an application by a Responsible Authority to cancel a permit. The permit had been granted 20 years before. It allowed use of the land as an amusement parlour. The grounds relied upon were substantial failure to comply with conditions and material change of circumstances since the grant of the permit. The evidence disclosed that the premises were habitually open outside the hours allowed, and in contravention of the condition imposing limitation on hours of operation. It also showed illegal use of the premises as a gaming house, for illegal drinking of alcohol, illegal possession and use of drugs and that it was a venue frequently used (inside and outside the premises) by drunken and/or unruly people including a particular gang who created noise and disturbance nuisances. A reading of the reasons given in that case shows that the actual ground relied upon, in that instance, was the ground of material change in circumstances since the grant of the permit. Nevertheless, I think an amusement parlour case where there was substantial failure to comply with conditions as to hours and the conduct of the premises, including conditions prohibiting use of the premises for such activities as gaming, prostitution, and/or illegal possession, use or sale of drugs and alcohol, would be quite a good example where s 87(1) could be relied upon as a ground for cancellation. That is a very different situation to allowing a requestor to gain a benefit from that party's own wrong doing, and, indeed, illegal behaviour. See also MMBW v R.E. Leamon Pty Ltd (1980) 17 VPA 9 and Frankston CC v Kaybea Pty Ltd [2000] VCAT 1149.