MSIX App Attach - Staging Fails

Hi,

Am trying trying out the MSIX App Attach feature on my lab. I have a Physical machine with W10 1909 Enterprise Build. Sideloading is enabled on the same. Am following the documentation here

Everything works until the below line under Staging:

$asyncOperation = $packageManager.StagePackageAsync("$path", $null, "StageInPlace")

Upon execution of above line, get the below error:

Cannot convert argument "deploymentOptions", with value: "StageInPlace", for "StagePackageAsync" to type "Windows.Management.Deployment.DeploymentOptions": "Cannot convert value "StageInPlace" to type
"Windows.Management.Deployment.DeploymentOptions". Error: "Unable to match the identifier name StageInPlace to a valid enumerator name. Specify one of the following enumerator names and try again:
None, ForceApplicationShutdown, DevelopmentMode, InstallAllResources, ForceTargetApplicationShutdown, RequiredContentGroupOnly, ForceUpdateFromAnyVersion, RetainFilesOnFailure""

Questions:
I see 2004 release of W10 as Pre-req. Is this only because of the fact that sideloading is enabled on this build. If yes, I have that enabled on my W10 1909 build as well.