Ms Access Expression builder

This is not a good question. What did you try to achieve? You need to do the following:

If the behavior of your code does not match what you expected, use the debugger and fix it. If you failed to do so, describe what did you want to achieve, what's expected behavior, what is observed behavior, why do you feel it's wrong. If you have some exceptions, describe steps to reproduce, complete exception information. Comment the points in code related to exception throwing/propagation. Post all what's relevant. See also: http://www.sscce.org.

—SA