Variables are parameters of a SAP data source and serve as placeholders for members, hierarchies, hierarchy nodes, formula elements, and texts. They often render as prompts in Analysis for Office when you insert that data source. After providing the variable values, the crosstab is displayed according to the selected values.
To change variable values, open the prompt dialog from the Analysis ribbon.
You can insert multiple data sources in your workbook and even on the same worksheet. It is possible that each data source will have variables defined. Because of this possibility, the prompt icon has two options available in the drop-down: Prompts for Workbook and Prompts for Data Source. If you choose Prompts for Workbook (the default when selecting the button), the prompt dialog will display all the prompts for all the data sources used in the workbook.
If you choose Prompts for Data Source, the prompt dialog will display only the prompts for the data source used for the selected crosstab.