How to create Evaluation Type Formula

Write any logical text, for example TotalWeight>30
Use the following signs to return a result:
?=Than
:=Else

For example:
TotalWeight>30 ? TotalWeight : 0

This formula will return the TotalWeight if is superior to 30 kg, otherwise, return 0

Possible parameters:

General Goods Level:
Quantity, CNTR, TEUS, PCS
TotalVolume , TotalWeight , TotalInsuredValue , TotalGoodsValue, TotalCustomsValue
Kilometers, Miles

Single Good Level:
Good.Quantity
Good.TotalVolume
Good.TotalWeight
Good.InsuredValue
Good.Value
Good.UnitVolume
Good.UnitWeight
Good.DimensionsL
Good.DimensionsW
Good.DimensionsH
Good.Kilometers
Good.Miles