Try using Set-Variable to set DSCMachineStatus

Author: johlju

.vscode/analyzersettings.psd1

@@ -33,7 +33,7 @@
         'PSUseApprovedVerbs'
         'PSUseCmdletCorrectly'
         'PSUseOutputTypeCorrectly'
-        #'PSAvoidGlobalVars'
+        'PSAvoidGlobalVars'
         'PSAvoidUsingConvertToSecureStringWithPlainText'
         'PSAvoidUsingPlainTextForPassword'
         'PSAvoidUsingUsernameAndPasswordParams'

source/Classes/020.SqlRSSetup.ps1

@@ -506,7 +506,7 @@ class SqlRSSetup : ResourceBase
         #>
         if ($this.ForceRestart -or ($exitCode -eq 3010 -and -not $this.SuppressRestart))
         {
-            $global:DSCMachineStatus = 1
+            Set-Variable -Name 'DSCMachineStatus' -Value 1 -Scope 'Global'
         }
     }