The function returns a TEXT with the previous value of a field for the current issue. It will return null
if the field was previously uninitialized.
previousValue(%{nnnnn}) #Output: Text
The function returns a NUMBER with the previous value of a numeric or date field for the current issue. It will return null
if the field was previously uninitialized.
previousValue({nnnnn}) #Output: Number
The function returns a TEXT with the previous value of a cascading or multi-cascading select field for the current issue at level i (with root level = 0). It will return null
if the field was previously uninitialized.
previousValue(%{nnnnn.i}) #Output: Text