SELECT IN query using ormExecuteQuery()

Question

I'm trying to do a SELECT IN query using ormExecuteQuery().  Following is the code I have:
Categories = ormExecuteQuery("from Category where Id IN (?)",[CategoryList]);
It only works when there is 1 value in the CategoryList.  i.e. This works:
Categories = ormExecuteQuery("from Category where Id IN (?)",[9]);
This DOES NOT work:
Categories = ormExecuteQuery("from Category where Id IN (?)",[8,9,10]);
Help would be greatly appreciated.

Answer 1

This works:
Categories = ormExecuteQuery("from Category where Id IN (:IdList)",{IdList=ListToArray(CategoryList)});
Seems like this would too, but it does not.
Categories = ormExecuteQuery("from Category where Id IN (?)",[ListToArray(CategoryList)]);