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# Global Variables

You can create global variables to use in equations. You define global variables in the Equations dialog box For example, Well_Volume = 20000.

You can:
• Define global variables using other global variables and dimensions. For example, Height = "Well_Volume"/(pi*("D1@Sketch4"/2)^2)).
• Drive dimensions using global variables. For example, D1@Extrude1 = “Height”.
• Share global variables among models.
• Configure global variables. See Global Variables in Configurations.
Global variables and their current values appear:
• In the Equations dialog box.
• In the Equations folder in the FeatureManager design tree.
• Under Value/Text Expression on the Custom tab in the Summary Information dialog box.
• Under Value/Text Expression in the Weldment dialog box.

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