Watches for built-in functions

To add a new watch, type the complete function name directly in the watches pane or choose Debug > Add Watch. The Debugger displays the function and its value in the Watches pane.

Table 3. ABL functions supported by the Debugger
Functions that can accept assignment of a new value	Functions that cannot accept assignment of a new value
CURRENT-LANGUAGE PROMSGS PROPATH	_PCONTROL NUM-ALIASES _SERIAL-NUM NUM-DBS COM SELF OPSYS PROCESS-ARCHITECTURE DATASERVERS OS-DRIVES DBNAME OS-ERROR ETIME PROGRESS FRAME-DB PROVERSION FRAME-FIELD RETRY FRAME-INDEX RETURN-VALUE FRAME-NAME SCREEN-LINES FRAME-VALUE TERMINAL GO-PENDING TIME LASTKEY TODAY MACHINE-CLASS TRANSACTION MESSAGE-LINES Note: TERMINAL is settable only on UNIX character interfaces. The values of TIME and TODAY change independently of program execution, so the values displayed in the watches pane might not agree with the last values displayed in the ABL program.

You can modify a function’s value by editing the Value cell in the Watches pane. If the function does not accept an assignment, the function retains its value. In this case, the Debugger does not generate an error message.