Use this in a Run Script step (VBScript):
Function RegValueExists(key)
Set objSh = CreateObject("WScript.Shell")
On Error Resume Next
objSh.RegRead(key)
RegValueExists = (Err = 0)
End Function
Builder.LogMessage RegValueExists("HKCU\Control Panel\Opened")
or put the function in project/global scripts and reference in a step field like
[RegValueExists("HKCU\Control Panel\Opened")]
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