understanding at market order  [SOLVED]

hallo team, i would like to better clarify the "At Market" sell order.
i have already read your wiki page: https://www.multicharts.com/trading-sof ... x.php/Sell but i still have doubt.

you wrote: A Sell Arrow will be placed at the next bar's Open tick.

but if open bar is equal to open day, and the opening price is already different from bid and ask, where MC place order?
filling the ask price or at opening price?
thanks

Fills.... ugh..

Live or back-test?

Live:
SELL MARKET will always fill at the best bid
BUY MARKET will always fill at the best offer

Back-test:
Welcome to a world of frustration between traders who know the markets and developers who think they do

thank you so much that was the answer i was looking for.
i was referring to real time.
thanks