Choose Tools tab→Variables group→Variables 
.
In the Variable Table, select the variable you want by clicking any cell within the row for the variable.
In the Variable Table, click the Variable Rule Editor button.
In the Variable Rule Editor dialog box, define the Limit Value type and properties you want, then click OK.
Tip:
When you define a discrete list or limited range of values for a variable that is a driving dimension, the list or range of variables is also available on the Dimension command bar.
You can also define a discrete list or limited range of values for a variable by typing the proper characters into the Range cell for a variable in the Variable Table. For example, to define a variable that must be greater than 5 and less than 10, type the following in the Range cell:
(5;10)
|
Character |
Meaning |
Where Used |
Variable Type |
|
( |
Greater Than |
Beginning Only |
Limit |
|
) |
Less Than |
End Only |
Limit |
|
[ |
Greater Than or Equal To |
Beginning Only |
Limit |
|
] |
Less Than or Equal To |
End Only |
Limit |
|
{} |
Encloses a Discrete List |
Use both as a set |
Discrete List |
|
; |
Separates values |
Between values in a limit or discrete list |
Limit and Discrete List |