All Vera variables are represented unchanged by the VeraBridge plugin.
There is an underlying flaw in Vera’s implementation, though, in that all device variables are actually stored as strings. Whilst the UPnP formalism is able to specify data types, and valid ranges/values, this is not fully utilised (indeed, often misused) by Vera implementation files.
It’s therefore impossible to tell what type a variable is, and just basing a judgement on its current value is likely to be fragile. It’s a particularly hard call, for example, if you’re trying to distinguish a Unix epoch date/time from just some random integer value. This also gave me some grief in the implementation of openLuup’s Data Historian, deciding which variables were likely to be valid numbers for long-term archiving.