Different random numbers at same time

I have a VBScript that looks like this

Randomize
Dim oAPI, oBag
Set oAPI = CreateObject("MOM.ScriptAPI")
Set oBag = oAPI.CreatePropertyBag()
Call oBag.AddValue("Random Performance", Int(Rnd*100)+1)
Call oAPI.Return(oBag)

Now, multiple instances of this script run at the same exact time, so they're probably all being seeded at the same time. As a result, they all give the same random number at a time. Is there possibly a way to make them give different random values at the same time?