Broker one-click buy/sell prices different from market ticks

 

Hi, 

If I examine the prices on one-click buy/sell buttons, I see different numbers than the current tick price feed.

This is because I opened a particular account with fixed spread in order to make automation easier.

For a particular automated strategy, I need to use the one-click buy/sell prices provided by my broker, not the tick data. 

How can I access those values from inside an expert advisor?

I tried Ask and Bid variables, but they show the current market ask/bid prices, not the broker's one-click buy/sell prices. 

 
nurettin: show the current market ask/bid prices, not the broker's one-click buy/sell prices. 
This are no differences. You only get brokers prices..