Can't evaluate expression.

Error 3071

Possible causes:

          You typed an expression1DUM8 that has invalid syntax2083DU.  For example, an operand or operator may be missing, you may have typed an invalid character or comma, or you may have typed text without enclosing it with quotation marks ( " ).  Check the expression to make sure you typed it correctly.

          You typed an expression that is too complex.  For example, a numeric expression71RISN may contain too many complicated subexpressions.  Try simplifying the expression by assigning some subexpressions to variables28IQDAD.