Hi,In flight sim, there is the B key to adjust barometric pressure. I know you're not supposed to use it, but sometimes, the ATC just does not give you the information. So, say you are currently set to 29.92. if you press this key, you will see that the barometric pressure indication is correctly updated under the PFD altitude scale (say it goes to 30.04) and the altitude is updated as well, but the aircraft would not climb or descent to adjust to the change (when in alt hold mode). If you now turn one click on the baro. pressure knob, you will see the indication go to 29.91 or 29.93, depending on the direction (instead of 30.03 or 30.05).So, it seems that there are shadow copies of some parameters somewhere in the PMDG logic that are not updated at the same time the displayed value are.Eric L.

We'll take a look under the hood Eric!VinPMDGwww.precisionmanuals.comhttp://www.vinscimone.com/dancnkid.gif

Eric-I've been grappling with this for awhile... the problem is that there's no way for me to intercept the "B" key at all - FS just isn't telling me that the user artificially updated the baro pressure... As such, our internal pointers are unaware of this change.I am not sure how to resolve this...

Hi Eric,I have experienced this too. It looks like PMDG is aware of it and looking for a fix. In the mean time if I am really needing to set the altimeter but ATC has not given me the info I just go ahead and hit 'B', note the new pressure, then use the pressure knob to set the altimeter to the noted pressure. That way FS and the 737 both agree on the setting.Don

>I've been grappling with this for awhile... the problem is>that there's no way for me to intercept the "B" key at all ->FS just isn't telling me that the user artificially updated>the baro pressure... As such, our internal pointers are>unaware of this change.>>I am not sure how to resolve this...Here's a suggestion :When the B key is pressed, the displayed value is correctly updated. I assume this number is drawn by the PMDG code, from the value it reads from an FS variable. If you save the last value you last drew, you can compare it to the one you are about to draw, and if they differ, you can assume the FS variable has changed in your back and propagate the change to your internal value (like if the user had really turned the knob).Eric.

>I have experienced this too. It looks like PMDG is aware of it>and looking for a fix. In the mean time if I am really needing>to set the altimeter but ATC has not given me the info I just>go ahead and hit 'B', note the new pressure, then use the>pressure knob to set the altimeter to the noted pressure. That>way FS and the 737 both agree on the setting.Yes, that is what I'm also doing now, and I can bear with it. It's not a real problem, but if it cannot be fixed, it should be note somewhere so that users are aware of this limitation.Eric.

Well it will be nice once the SDK is out, a lot of things will get easier ;) [h4]Best Wishes,Randy J. Smithhttp://img.villagephotos.com/p/2003-5/196432/winglets_lg.jpg