Graphing a custom query

I am trying to create a custom SQL web-based report that graphs the number of UDT ports in use over time (I'm posting this in the NPM forum because this is a question about web reports)

SELECT  
       month 
       ,Sum(apc) MaxPortCount
FROM   (SELECT DATEADD(month, DATEDIFF(month, 0, DateTime), 0) AS Month   
               ,upd.nodeid 
               ,max(avgactiveportcount) mpc 
        FROM   [dbo].[udt_portusage_daily] UPD 
               INNER JOIN nodes N 
                       ON N.nodeid = UPD.nodeid 
        WHERE  Datetime >= '2013-01-01' 
        GROUP  BY DATEADD(month, DATEDIFF(month, 0, DateTime), 0)
                  ,upd.nodeid) X 
GROUP  BY month 
ORDER  BY month  

I cannot get the report writer to display a graph of this data -- am i missing something?

it displays the information as a table, but I can't figure out why it will not draw a graph if the data.