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Class #1 - choose class of object that's field value will be used as first argument of math operation (it can be same object as main class object or it's ancestor based on chosen perspective).
Field #1 - choose metadata field that's value will be used as as first argument of math operation.
Operation - choose math operation that will be performed.
Then select whether second argument will be a strict chosen number of it will be taken from another field.
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Class #2 - choose class of object that's field value will be used as second argument of math operation (it can be same object as main class object or it's ancestor based on chosen perspective).
Field #2- choose metadata field that's value will be used as as second argument of math operation.
Result of math operation will be put into chosen Object Class Field from main configuration (left panel).
Rule Based field
When configured, chosen class field will be given desired value if a HQL condition is met.
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