Switch/Case negative constants not supported?

[Ian Nicholson]

It appears PPMAC originally did not support negative case constants in switch structures. However, the firmware update history for V2.5 Release Updates (August 2018) includes the following note:

Quote

17. Corrected operation of switch() structure when argument evaluates to negative
number, permitting case branches specifying negative integers. Negative values had
gone to case 0: branch.

But when I try to use code such as the following, I get a Syntax Error on the minus sign:

Has the IDE just not been updated to support this change yet? Is there a different syntax I should use here? Or am I misreading the history note and this is actually not supported?

Edited July 13, 2022 by Ian Nicholson

[steve.milici]

Sometimes the syntax checking in the IDE is biased to “C” syntax but this should download without errors.