Highest value out of several fields
Return the highest value from a list of numbers consisting of a combination of numeric field codes.
Configuration
Create a Custom smart number field and use the General parsing mode.
Expression
CODE
%{max([{issue.cfAAAAA}, {issue.cfBBBBB}, {issue.cfCCCCC}, {issue.cfDDDDD},
{issue.cfEEEEE}])} 
Please, replace the field codes with the ones of your choice.
Display as
Number
Formatting style
Default (unformatted)
Used parser functions
The links lead to the JWTC documentation because the parser functions are shared functionalities.