Double Trouble” is an action-comedy that stars Jaycee Chan, the son of Jackie Chan, in the type of role his father perfected, and for that alone it has some curiosity value. But that value, it turns out, isn’t worth the price of admission. The younger Mr. Chan plays Jay, a member of a Taiwan security team in charge of protecting a treasured 400- year-old painting about to be put on display. When the painting is stolen, he is mistakenly thought to be involved. Chasing the thieves — two “hit girls” in black leather and stiletto heels — he gets tangled with Ocean (Xia Yu), a vacationing security guard from Beijing. The escaping thieves plant the rolled-up artwork in a handbag that is carried onto Ocean’s tour bus, which leaves without Jay. He needs Ocean to help him find the bus; Ocean needs Jay to get him back to his tour. Before the film ends, the partners will have gangs to fight and scenic vistas to appreciate and a showdown with Mr. Big. Unfortunately the director, David Hsun-Wei Chang, shows an indifference to elevating the by-the-numbers script. There’s usually plenty of stunt work and unforced humor in movies like this. “Double Trouble,” though, has little action, and the comedy is strained and mechanical. It may be unfair to compare this effort with a Jackie Chan movie, but two minutes of a flick like “Project A” have more fun and games than this entire film. A story about two guards — one from Taiwan, the other from mainland China — working together for a greater good clearly hopes to encourage warmer regional relations. A pity this weak buddy movie leaves its built-in fan base cold.