To open Add State Input dialog:
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 1.  | 
 Open new or saved document ,.  | 
| 
 2.  | 
 Select a State Diagram or create a new one (i.e. select New State Diagram from File menu). When a State Diagram is available you'll see it as an white-and-grey colored object (marked as "2" on the Figure 6 below) in UML Object Diagram Drawing area (marked as "1" on the Figure 6 below).  | 
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 3.  | 
 Click on the State Diagram's object in UML Object Diagram Drawing area.  | 
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 4.  | 
 Select Object tab in Properties Editor (marked as "3" on the Figure 6 below).  | 
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 5.  | 
 On Object tab find Inputs property category. If necessary, scroll down to the very last row in the Inputs property category till you see New Input - "Add".  | 
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 6.  | 
 Click the cell with "Add" to open Add State Input dialog.  | 
There are four fields:
| 
 1.  | 
 Name:  | 
 The name of the input pad.  | 
| 
 2.  | 
 Width:  | 
 Select a named constant that specifies the width in bits of a vector, or Unused if it is one bit.  | 
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 3.  | 
 Visibility:  | 
 + for global, - for local.  | 
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 4.  | 
 The expression assigned to the input. The Link is specified with the Expression Editor which opens when the button in the Link field is selected.  | 

Fig.6 Opening Add State Input dialog
