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Configuration Parameter File Reference
MVDefined
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Sets MVBasic handling of undefined variables system-wide.
Synopsis
[Miscellaneous]    MVDefined=n
Description
This setting defines MVBasic behavior when it encounters a reference to an undefined variable.
Examples
MVDefined=1
Range of Values
0 or 1. The default is 0.
Management Portal
On the page System Administration > Configuration > Additional Settings > Compatibility, in the MVDefined row, select Edit and choose true (selected) or false (cleared).