Values of ID Variable to Plot Use the text box to list the values of the ID Variable that you want to plot. For example, to specify the identifier variable as GeneID , list in this box all the values of GeneID that correspond to the genes of interest. Rows whose values match the values listed here are plotted. To Specify Values to Plot: Type the desired values in the text field. Each value should be entered on a separate line. For example, to plot all of the rows with ID values of 4, 8, 9, or 14, enter those values in the text box, as shown below: