The current value is the value of the variable as the session progresses. When a session starts, the current value of a variable is the same as the start value. As the session progresses, the Integration Service calculates the current value using a variable function that you set for the variable. Unlike the start value of a mapping variable, the current value can change as the Integration Service evaluates the current value of a variable as each row passes through the mapping. The final current value for a variable is saved to the repository at the end of a successful session. When a session fails to complete, the Integration Service does not update the value of the variable in the repository. The Integration Service states the value saved to the repository for each mapping variable in the session log.