ERROR
ERROR AS Boolean
Returns 
TRUE if an error has happened.
Use it just after a 
TRY instruction to know if the executed instructions failed.
To get more information about the error, use the 
Error class.
The error flag is reset to 
FALSE when:
  - 
The RETURN instruction is executed.
- 
A TRY instruction has been executed without any error.
Examples
Dim FileName as string = "File"
TRY KILL FileName
IF ERROR THEN PRINT "Cannot remove file. "; Error.Text
ERROR ...
ERROR Expression [ { ; | ;; | , } Expression ... ] [ { ; | ;; | , }  ]
Prints expressions to the standard error output, exactly like the 
PRINT instruction.
The standard output can be redirected by the 
ERROR TO statement.
See 
PRINT for more details about the syntax and the behaviour.
See also