That is what should be there. However, it's possible that something else is hiding ("invisibly") afterwards. Try to make sure the value is really like this (e.g. delete the content completely, confirm, then open and change it to autocheck autochk *).
If possible, you can export the value of BootExecute into a file using File->Export option (before you make the changes, of course) and paste the content here (it will be a list of numbers) - so that we can see what's wrong there. Note that exporting the value will actually export the whole Session Manager key - i.e. the file may be quite big. It should be easy to find the BootExecute value inside, however.