Hello,
I was following below article for Windows 10 Upgrade Assessment. I have created Upgrade Assessment task sequence with steps to set custom TS variable on value of _SMSTSOSUpgradeActionReturnCode TS variable.
https://deploymentresearch.com/Research/Post/533/Improving-the-ConfigMgr-Inplace-Upgrade-Task-Sequence
My TS is setting custom variables (Message) depending upon the value assigned to _SMSTSOSUpgradeActionReturnCode .
But what I observed is TS variable evaluation returns true only for _SMSTSOSUpgradeActionReturnCode = 3247440400 else returns false as per smsts.l