This variable controls whether a warning message is printed when non-numeric data is used in a context where numeric data is required. There are four possible settings:
0 (off, false, no) No warning is printed.
1 (on, true, yes) A warning is printed. This is the default.
2 A warning is printed. If you are in the debugger, an automatic breakpoint occurs.
3 A warning is announced as: "Non-numeric data in numeric field." It constitutes a so-called "intermediate" runtime error that calls installed error procedures.