This run-time message is generated if, after evaluating a macro token, the following conditions are true:
•One or both of the nResult Actions are set to change Minicalendar date.
•The value of nResult is 0.
This means that you are using the value of nResult as the date to use in some resulting action, but you seem to have forgotten to calculate the value of nResult.
Technically, this is not an error, as the value 0 is an allowable date. But since the date corresponding to the value 0 is December 30th 1899, this message warns you that this might not be the date you really want to use.
Topic 173830, last updated on 19-Apr-2020