How do I express open to low of yesterday (whole day)

[jzfusion]

Guys
How do I express open to to low of yesterday?

I have YesterdayOpen and YesterdayLow as variables. Is the range of open to low therefore YesterdayLow + YesterdayOpen?
I'm confused. Will the same apply for bull and bear candles?

[trader.philipps]

@jzfusion Have a look on a daily candle

Let's asume open price is 1.1000 and low is 1.0900. So Open price - Low is the range (positive value).

Does that make sense?