MOVIE-MAKERS are battling with police over restrictions on the use of explosives in action movie sequences. The row escalated after police charged three members of a film crew yesterday for using explosives without a licence. They have been released on bail and will appear at Eastern Magistracy next month. Police had received complaints from the public about a huge fireball and an explosion during the making of an action movie in mid-September at Shing Mun River channel. Film-makers often ignore laws on controlled explosions and pyrotechnics under licence, police say. Chief Inspector Feline Li Wai-lin, who heads the TV and Films Liaison Section, said: 'They did not bother to notify us and took the risk of being charged by the police.' Hong Kong Film Directors' Guild spokesman Gordon Chan Ka-seung said they were forced to challenge the law because the Government would not listen to them. 'To get a licence, we have to prove we've licensed dynamite experts on every film location where explosives or pyrotechnics are used,' the action film director said. 'But there is no local authorised test for a licensed dynamite expert. So how can we provide them with these people?' Instead of bringing in foreign experts - 'it's not cost-effective' - Mr Chan said Hong Kong only needed 'a test' for local dynamite handlers so they could be licensed.