Took me a little while to figure this one out, you’ve assigned your workflow to a library and you can set all other other flags like “AllowStartChange” and “AllowStartCreate”, but cant see how to set “Start this workflow to approve publishing a major version of an item.”
That’s because its a property on the library itself called “DefaultContentApprovalWorkflowId”
So you might want to do something like this…where you have the WorkFlow Association object ($wfAssociation) and the list/library ($list).
$wfAssociation = [Microsoft.SharePoint.Workflow.SPWorkflowAssociation]::CreateListAssociation(……
$list.WorkflowAssociations.Add($wfAssociation) | Out-Null $list.DefaultContentApprovalWorkflowId = $wfAssociation.Id $list.Update()
Resources:
This is probably the best Associate workflow to list/library with Powershell example out there http://bit.ly/AcOa2s
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