Some lengthy expressions or conditions may need brackets which group terms together so that the expression is not ambiguous. For example, the expression
a * b – c >0
is ambiguous, as (a * b) – c > 0 may be different to a * (b – c ) > 0. so in this example, you would have to explicitly insert the required form of the bracketing.
Sometimes the knowledge builder will detect an ambiguous expression or condition, and give you get the warning message “brackets are needed to distinguish between:” followed by a list of possible options for where the brackets are to be placed. If you get this message, you can select and copy the required form of the condition from that warning message, and paste it as your condition expression, as shown below:
