Caché ObjectScript Reference - InterSystems Documentation

System and Other Functions• $GET function$ZUTIL(69,1)Sets null subscript mode default system-wide.$ZUTIL(69,1,n)$ZU(69,1,n)ParametersnThe boolean value that specifies whether or not to enable the setting and referencingof null subscripted globals.DescriptionUse $ZUTIL(69,1) to specify the system-wide default setting for the null subscript modeswitch.If null subscripted globals are not enabled (n=0), attempting to set a null subscripted variable,such as SET ^x("")=99, or to reference a null subscript, such as WRITE ^x(""), results ina error. For details on error format, refer to the $ZERRORspecial variable.If null subscripted globals are enabled (n=1), you can set a null subscripted variable, such asSET ^x("")=99, just like any other variable. Referencing an undefined null subscriptedvariable results in a error.Invoking $ZUTIL(69,1) without specifying n returns the current switch setting.ParametersnThe switch that determines the default setting for the null subscript mode system-wide. 0 =Setting/referencing null subscripted globals disabled. 1 = Setting/referencing null subscriptedglobals enabled. The native default for this switch is OFF (0).NotesThe system-wide default behavior is that a null subscript reference causes a error. This configuration default cannot be changed using the System Management Portal.636 Caché ObjectScript Reference