The following post-function is provided by catworkx Moneyfield:

[cwx] Euro Field Aggregation

Aggregates moneyfields and writes the sum into another moneyfield.

Required information:

• Aggregated Fields: Select two or more moneyfields. Use the Shift and CTRL key for selection.
• Target Field: Select a moneyfield from the pull-down menu into which the sum is to be written.
  

Field to function parameter mapping: