Follow these steps:
1-Add a required field to the report canvas
2-Right-click on the field
3 - select the menu item "Field format"
4 - On the General tab in the Format Editor dialog box, click the Conditional Format button [x + 2] for the Display Bar option
5-In the Formula Workshop, enter the following formula:
if {Tablename.Fieldname}= True then Totext(CurrentFieldValue) else Totext((CurrentFieldValue)) + " Outstanding"
6 - Click the [Save and Close] button
7 - Click the OK button in the Format Editor dialog box
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