Configure service propagation rules use type of alerts on OMW version 9

Dear Experts,

 

I am using OMW version 9.

 

I am building service tree and i use serverity for propagation rules, it's well.

But i want the service tree to reflect based on type of alerts.
Example: server down is also critcal alert and CPU hight is also critical alert. I want parent group to reflect as critical only when my child group server is down and not when there is a critical CPU alert.

 

Anyone has experienced about this, please help me.

 

Rgds,

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