Double.From(value as any, optional culture as nullable text) as nullable number
Returns a Double number value from the given value. If the given value is null, Double.From returns null. If the given value is number within the range of Double, value is returned, otherwise an error is returned. If the given value is of any other type, see Number.FromText for converting it to number value, then the previous statement about converting number value to Double number value applies. An optional culture may also be provided (for example, “en-US”).