Unable to get number of copies of a print job in C#

1. PrintJobInfoCollection jobs = pq.GetPrintJobInfoCollection();  
2.         foreach (PrintSystemJobInfo job in jobs)  
3.         {  
4.   
5.             string[] row = new string[] { job.JobIdentifier.ToString(),  
6.                                           pq.Name,  
7.                                           job.Name,  
8.                                           job.JobStatus.ToString(),  
9.                                           job.Submitter,  
10.                                           job.NumberOfPages.ToString(),  
11.                                           ((job.JobSize / 1024f) / 1024f).ToString("N2") + " MB",  
12.                                           job.TimeJobSubmitted.ToLocalTime().ToString() };  
13.             dataGridView1.Rows.Add(row);                   
14.         } 
    

While I tried this code to get a number of copies which is always returning me 1