How to add extra fields to timechart

[tgdvopab]

I have the following search:

index=main_index sourcetype=Perfmon:InboundPSTNCalls | timechart span=5min  avg(Value) as "Inbound PSTN Calls" by host | addtotals | eval threshold=50

This result's exactly what I want, but now I have the value of the threshold saved in a field called threshold.
How can I define the variable as the value of the field?

Thanks for the responses! 🙂

[maciep · Accepted solution]

do you mean something like this?

index=main_index sourcetype=Perfmon:InboundPSTNCalls | eval threshold=50 | timechart span=5min avg(Value) as "Inbound PSTN Calls" avg(threshold) as threshold by host 

[somesoni2]

Could you provide more about "defining the variable as the value of the field"? What is the expected output?