When I set Period = 60, shouldn't "priceOpen(hour(0))" point for the same price = daily open for all hourly bars in daily candle? I receive different values for every(!) run().

If your script is correct, you should indeed get 24 times the same price.

i don't thing so. usually NightWalker get the open-price of every finished hourly bar because he uses Period 60 and not 1440.

jcl is right, code is ok, I thought I did something wrong int this line, but I messed up with TimeFrame.