After a parameter change Perform optional hook directives
Changing parameters will be done using our APIs and will have two hooks involved, imagine you
want to change the Profit Rate on your product. In this situation, the pre_parameter_change_code will run and then once the parameter has been successfully
changed the post_parameter_change_code will autonomously run. Actions such as recalculating profit on an account could be done in the
post_parameter_change_code