In The Business Process and the Business Operation, I am using the following code to get the value of TimeCreated and TimeProcessed

BP:

%Ensemble("Process").%PrimaryRequestHeader.TimeCreated

%Ensemble("Process").%PrimaryRequestHeader.TimeProcessed

BO:

..%RequestHeader.TimeCreated

..%RequestHeader.TimeProcessed

But I am trying to use ..%RequestHeader.TimeCreated in Business Service it is not storing any value.

How to get the value of TimeCreated and TimeProcessed in Business Service?