You insert PS/nVision variables into the layout to display heading information that might change from report to report, or between report runs. For example, you could use a variable to automatically insert the report ID you specify in the Report Request dialog box, so you do not restrict this layout to a single purpose. Remember that your layout may be used with a scope that changes its contents, which could make a hard-coded title misleading.
You can define variable criteria at the cell level only—one variable per cell—and the variable must be the only element in that cell.
Note. When you choose a variable, you select its three-letter code. However, when a variable is used in a layout or report request, its code must be enclosed within percent signs (for example, %RID%).
In this exercise, you will use the Variable tab of the Layout Definition dialog box to specify variable criteria to an existing matrix layout.
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