CRFFP0018E: The expression cannot run because it refers to a header cell in a matrix attribute.‎ עיינו במערכת העזרה כדי לקבל פרטים.

Explanation: Because the expression refers to a header cell in a matrix attribute, the expression cannot run.‎

Administrator Response: Rewrite the expression and make sure that it refers to a valid data cell in the matrix.‎