I have several reports in which I have used data from a query. In the "conditions" of my "System No" field I have set up [Enter System No] as the parameter value the user enters. I would like to simplify my effort in printing reports such that the error "you entered an expression that has no value" is not displayed when the system number does not exist in the table and I only have to enter the parameter once. There are 4 reports that I must run each time I do this.