How to display Error in Email

Hi,

I have created alerts and it is showing in Alert Inbox. When I check in SXMB_MONI i see the error as

<SAP:Category>XIAdapter</SAP:Category>

<SAP:Code area="PLAINHTTP_ADAPTER">ATTRIBUTE_SERVER</SAP:Code>

<SAP:P1>500</SAP:P1>

<SAP:P2>Internal Server Error</SAP:P2>

<SAP:P3>Internal Server Error</SAP:P3>

<SAP:P4 />

<SAP:AdditionalText />

<SAP:Stack>HTTP server code 500 reason Internal Server Error explanation Internal Server Error</SAP:Stack>

<SAP:Retry>M</SAP:Retry

But in Alert using variable &SXMS_ERROR_CAT& and &SXMS_ERROR_CODE& I am only getting

PLAINHTTP_ADAPTER and PLAINHTTP_ADAPTER.ATTRIBUTE_SERVER

Looking at the above message, users would not get clear picture.

My Q is how to get SAP: Stack. What variable should I use in Alert to see this message.

Regards