AEX alerts with abap stack

Hi

I have a single stack PI system but the client wants the alerts to use the classical dual stack with alert category etc

so we are following the below document and using a SOLMAN abap stack for creating the alert category and specified some parameters in NWA  so that the central monitoring server now points to SOLMAN

http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/10d828df-0a5e-2e10-6d9f-83d9034a5301?QuickLink=index&…

When we try to see if the alert is working fine using the below link we get a JCO error

http://xxx:50000/AdapterFramework/alerting/ping.jsp

Connection parameters:

ApplServer Host: null

MessServer Host: yyy.xxx.com

SysID: xxx

Group: xxx

Client: 100

Sysnr: null

Language: EN

UserId: PIRWBUSER

trying to connect...

Calling FM RWB_PING on host:

com.sap.mw.jco.JCO$Exception: (106) JCO_ERROR_RESOURCE: Invalid connection encountered

Here the ApplServer Host and Sysnr are showing as null even though I configured them in NWA as specified in the doc

com.sap.aii.rwb.server.centralmonitoring.r3.ashost : xxx

com.sap.aii.rwb.server.centralmonitoring.r3.sysnr:00

Any ideas?