It's been a year since Vanessa Hudgens won a devastating legal battle against her ex-producer -- but the actress claims she still hasn't gotten the $38,000 she's owed ... and now, she's out for retribution.
Vanessa filed legal docs on Wednesday, asking a judge to enforce the judgment she won last year against a guy named Johnny Vieira -- who entered into a production agreement with Hudgens back in 2005 to help launch her career.
Vanessa sued Johnny back in 2009, claiming they had severed their professional relationship in 2006 -- but Johnny was still using her image to promote his business.
A judge awarded Vanessa $29,500 in damages last year, plus attorney's fees and costs totaling $9,314.62 -- but the actress claims she hasn't seen a dime.
She wants a judge to drag Johnny to court asap ... and force him to pay up.