How to show in the audit report the values changed in BPM Worklist's FinApInvoiceApproval Rules

Summary:

What report can we use to capture the changes made to parameters of FinApInvoiceApprovalRules in BPM Worklist. Audit Report doesn't show the old/new parameter values.

Content (please ensure you mask any confidential information):

We are making changes to parameters in the business rule for FinApInvoiceApprovalRules task in BPM Worklist. However the changes made to the parameters are not displayed in the audit report as expected. For instance, we made a change to one of the parameters in the, where we changed the value from $2,500 to $3,000 but do not see those details included in the report. The report states that the rule changed. The old value column does not show what the previous value was ($2,500). We would like to see the values that changed in the parameters when