The Microsoft Operations Manager Expression Filter Module could not convert the received value to the requested type. Property ...

The Microsoft Operations Manager Expression Filter Module could not convert the received value to the requested type. 

Property Expression: %5 

Property Value: %6 

Conversion Type: %7 

Original Error: %8 

One or more workflows were affected by this.  

Workflow name: %2 
Instance name: %3 
Instance ID: %4 
Management group: %1