Incrementing test case property value using groovy script

def curJobId = testRunner.testCase.getPropertyValue( "JobIdIncre" );
int curJob=Integer.parseInt(curJobId);
def jobId = context.expand( '${#TestCase#JobID}' )
//Composing the JodId for this event
def returnJobID=jobId+curJob;
//Incrementing the JobID for next event
curJob=curJob+1;
testRunner.testCase.setPropertyValue( "JobIdIncre",curJob.toString() );
return returnJobID;