SWAP Question - Demo and Live platforms

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I was wondering if someone could answer a few questions regarding swaps :

1. I Know I can use MarketInfo(“EURUSD”,MODE_SWAPLONG) in a demo platform and I get a value returned, but is this swap value the same as would be
used in the live platform ?

2. How often do the swap rates change ? a number of times per day .... a number of times a week ? or is there a particular day and time that they are calculated ?

Thanks in advance for any enlightenment on these questions !