Major Description
With the arithmetic expression check that has been introduced with 2.3.29, negative numbers are considered to be arithmetic expressions.
This makes it impossible to use number fields with negative values as KeyProperty in collection type conversion.
I can understand that one does not want to have arithmetic expressions in parameter names. OTOH, I would not consider a negative number as an arithmetic expression.
Please let me know if I should rather open this issue in the ognl project.