Use the Custom Error tab to create more detailed error or warning conditions than you can create using the Request Details pane in the Web Application Editor. When the criteria you set become true, the associated monitor will change to a Red status.

The Custom Error tab contains the following elements:

Enable the custom error criteria

Enables the custom error criteria you create on this dialog box.
Insert

Specifies what type of expression you want to create.
  • Expression is a simple comparison.

  • And Group enables you to create two expressions where both must be met for the expression to be true.

  • Or Group enables you to create two expressions where either expression can be met for the whole expression to be true.

Delete

Deletes an expression.
Formula

Opens a formula editor where you can type the expression. If you have already created part of an expression by using Insert, the editor will display that expression formatted as an expression. This can give you an example of how to add to the expression.