Hello, 

I am trying to automatically calculate a given target property (PrixChambreHotel) based on a map value which manipulates two input properties

However, I noticed that the value of the target property does not update when the input properties are valued

I noticed also that the Change Tracking tab of the declarative expression in missing on my environment

I have two questions

1. Is this behaviour regarding the Change Tracking an update?

2. How to configure my declare expression to automatically calculate (invoke the map value) whenever the values of an input property change?

Note for the moderators: I am working on a standard edition, there is no client sensitive information shared