Steam beans, covered, 5 minutes or until crisp-tender. Rinse beans under cold water; drain. Combine pasta, beans, beef, and cilantro in a large bowl.
Combine plum sauce and remaining ingredients in a small bowl. Add plum sauce mixture to pasta mixture, and toss to coat. Serve salad either at room temperature or chilled.
this was an easy and tasty pasta salad. of course i would never use frozen green beans, fresh are always better!