If you want to check error messages (see chapter “How to Check if an Error Occurs”) within a test it is often quite wasteful to type a long error message into the Ok field. A very simple way for getting the exact error message is to carry out the execution without entering something into the Ok field.
The exact error message is then displayed in the Message field beyond the Result field from where you can copy the message and paste it into the Ok field. Please note that after pasting it you have to escape the quotation marks by using a backslash sign.
Note: You can also use wild cards after copying the error message (see chapter “How to Use Wild Cards”).