Selected watch expression invalid

It isn't always possible to select a valid watch expression. This error has the following causes and solutions:

• You chose the Instant Watch command, but the selected expression isn't a valid expression. For example, you can't watch a comment or a Sub procedure call.

  Select the expression in such a way that it is valid, or choose Add Watch and type in a valid expression.

• The watch expression must have code syntax corresponding to the locale of the project that defines the expression being watched.

  Rewrite the expression in a way that is valid for the locale.

For additional information, select the item in question and press F1 (in Windows) or HELP (on the Macintosh).