This compiler error will occur if the first non-blank character after an in (membership) operator is not a '[' (set operator).
For example:
if n_TokenWeekday in (6,7) // should be [6,7]
// do something if it's the weekend
endif
This error is usually due to the use of parentheses () rather than square braces [].
Topic 109630, last updated on 18-Apr-2020