I have a table where i show Hours. Only Hours is a attribute in de model and not a column in the tabel. So when i want to Sum the "hours" i get a error 500 that the query is bad.
Now i want to summarize this column only with the real column in the database in this case the column is amount that needs to sum.
With below settings that i got from Custom summaries the summory wont show anythin it doe not pop-up nor does it gives me a error.