Object.KillTimer Event Not Working

I am using DesktopX 1.99c[b] and I don't believe that the Object.KillTimer event works in VBScript. I have created a test program. In the program, if the coding works as I think it does, when you click on the object,the timer is set, a message box should pop up when the timer goes off, and then the timer should be killed. Instead I am finding that th emessage boxes keep appearing and appearing until you disable the script on the object. Here is the code I am using to test it:

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'Called when the script is executed
Sub Object_OnScriptEnter
TimerExecuted=0
End Sub

'Called when the script is terminated
Sub Object_OnScriptExit

End Sub

'Called when the object state is changed
Sub Object_OnStateChange(State)
If Object.State = "Command executed" Then
Object.SetTimer 1, 5.6
End If
End Sub

Sub Object_OnTimer1
Script.MsgBox "This should only display once if Timer 1 is being killed."
Object.KillTimer1
End Sub

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Unless my coding is flawed (which is very possible) it appears that the KillTimer even is not working. Why is it not working? Thanks!!