Bizunit: EventLogCheckStep Issue

Hi,

Bizunit EventlogCheckstep is throwing error even if the event log exist. Below are the details

Event Log entry Code:
System.Diagnostics.EventLog.WriteEntry(“PO_Val”,decPOTotalVal.ToString(),System.Diagnostics.EventLogEntryType.Information,1);

Test Script (Teststep) for Event Log Check

<TestStep assemblyPath=”” typeName=”BizUnit.EventLogCheckStep”>
      <!– Delay before checking the event log for Child orch start–>
      <DelayBeforeCheck>2</DelayBeforeCheck>
      <Machine>PCILON-D860</Machine>
      <EventLog>Application</EventLog>
      <Source>PO_Val</Source>
      <Type>Information</Type>
      <EventId>1</EventId>
      <!– Work Opposite: If event do not exist Test Step is Success–>
      <FailIfFound>False</FailIfFound>
    </TestStep>

When I check Application event log, event log entry exist but still unit test is thowing error
BizUnit encountered an error executing a test step
  —-> System.ApplicationException : Failed to find expected event log entry.

When I change FailIfFound to True, test passes even without log entry.

Please help me in sorting this out. Thanks for help in advance.