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Creating a Global Variable

To create a global variable in the Modify dialog box for a dimension:

  1. In the model, double-click a dimension.

    The Modify dialog box for dimensions displays, showing the name of the dimension and the current value.

  2. In the second line of the Modify dialog box, enter = (equal sign). Enter the name of a new global variable and enclose it in quotation marks.

    The text displays in yellow and the Create Global Variable button Create Global Variable appears next to the name.

  3. Click the Create Global Variable Create Global Variable button, or hit Enter, or click PM_OK.gif and Yes.

    The global variable button equations_global_variable.gif appears to the left side of the equation. Clicking the global variable button causes the entry to toggle between the global variable name and the evaluated value.

  4. Click PM_OK.gif to confirm.

Changes to the value of the global variable update all equations and variables in the model that reference that global variable.

The next time you open the Equations dialog box it will include:
  • The new global variable.
  • The equation making the dimension equal to the global variable.

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