SQL Server 2005 Using dbcc inputbuffer

I have an audit routine sp which is triggered in my stored procs when they are run to record what is being requested by the clients.

I am wanting to record the Exec command the client is using, I have implemented the code below and if I run the code in management studio I get the correct result e.g.

Exec [IT].[UP_ReportUsageAudit] '05/01/2011', '05/01/2011', 'Select All', '1'

however when running from a client application the result is recored incorrectly e.g.

Corp_Rpt.IT.UP_ReportUsageAudit;1

What is the difference as to why I get differing results?

Code:

---

DECLARE @sql varchar(100)
DECLARE @command varchar(8000)
 
 CREATE TABLE #tmpGetBuffer   
( 
 EventType varchar(1000),
 Parameters varchar(6000), 
 EventInfo varchar(8000) 
) 

  set @sql = 'dbcc inputbuffer('+ cast(@@spid as varchar(10)) + ')' 
  insert into #tmpGetBuffer 
  exec(@sql) 
 
  SELECT        @sql_handle = sql_handle
                        FROM master.dbo.sysprocesses
                        WHERE        spid = @@SPID

select * from #tmpgetbuffer
select @command=  eventinfo from #tmpgetbuffer 
 
IF @AuditID IS NOT NULL
EXEC Common.UP_AuditEventUpdate                @AuditID = @AuditID                ,@Status = 'E'                ,@Parameters = @strParameterDesc, @command = @command

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