RL custom environment example: LoggedSignal or LoggedSignals?

In the example

openExample('rl/CreateMATLABEnvironmentUsingCustomFunctionsExample')
function [InitialObservation, LoggedSignal] = myResetFunction()

Is it LoggedSignal or LoggedSignals? Since in rest of the code it is defined as LoggedSignals. If it isn't typo, why its defined separately? I assume it is not interfering with the overall simulation.

[Willem Völker]

Have you figured this one out yet?

[Praveen Kumar Nambisan T M]

Not yet. But I couldnt find any error or changes occuring due to this.