Iam trying to create oil pressure indicator,using XML.
Pretty simple task-but the only problem that values should grow from 0 to 100 PSI in counter clockwise directon-and I cant get the needle to rotate this direction-it always rotates clockwise.For example if value changes from 50 to 70 PSI-needle rotates full circles several times,making every circle few degrees less then previous one  gradually reaching the target mark.
Is there any attribute of <rotate> command,forcing needle to rotate CCW?

OMG!
I tried all kinds of tricks with long expressions,inverting values etc., except the simpliest and most obvious one!

Thank you a lot!

Yes,you are right.
But solution was so obviuos that nobody might find it even worth mention or discussion.May be...
Thank you again.With your help I finally finished pretty complicated gauge for the beginner like me-EICAS:





And if you dont mind I ask one more question about XML.
One stupid XML problem is driving me crazy-very simple and classic task:
There is a switch,wich jumps from on to off position.Near the switch there is a simple indicator(lamp),wich supposed to indicate that switch state.
Both gauges uses the same variable to change their state.Very simple.And actually works-I click switch-lamp goes on-one more click-lamp goes off.
The problem is that switch doesnt jump when I click it. But as I remove the lamp from panel-switch jumps.Two gauges cannot use the same variable as a source?
Thats the XML limitation?Or as in first case I dont see the most obvious?

Here is the code.Very simple.

As I said-gauges actually work-lamps go on/off and I can see key event feedback on EICAS(power drop etc.,)
But switch jumps only once from off to on position and stays there,ignoring mouse clicks.I mean "OFF" bitmap stops showing up.
As I remove lamps gauge from panel-all works properly.

Something strange and funny:Switch off lamps off.Click on switch-lamps on,switch on.One more click-lamps off switch stays on.Shift+L twice to toggle all aircarft lights-switch returns to off!What is this?

Switch:

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<Gauge Name="ANTIICE_MASTER" Version="1.0">
     <Element>
           <Select>
                 <Value>(A:General eng1 anti ice position, bool)</Value>
                 <Case Value="0">
                       <Image Name="AntiIce_Switch_OFF.bmp"/>
                 </Case>
                 <Case Value="1">
                       <Image Name="AntiIce_Switch_ON.bmp"/>
                 </Case>
           </Select>
     </Element>
     <Mouse>
           <Cursor Type="Hand"/>
           <Click Event="ANTI_ICE_TOGGLE"/>
     </Mouse>
</Gauge>

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Lamps:

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<Gauge Name="ANTIICE_LAMPS" Version="1.0">
     <Element>
           <Visible>(A:General eng1 anti ice position, bool)</Visible>
           <Image Name="AntiIce_Lamps_ON.bmp" Bright="Yes"/>
     </Element>
</Gauge>

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Thank you for trying to help,but problem is not in code,because I tried to use L variable too.Just 10 minutes ago I finally solved the problem.
It was overlapping gauge bitmaps.I had no idea that gauge bitmaps must not overlap even if it is transparent in this area,otherwise the lower gauge bitmap(wich loaded first) stops refreshing,FS considers it's invisible and stops refreshing the bitmap,although it does visible through upper gauge transparent area.Ah...
This time it was not so obvious and required some thinking and trying.