Hi All .... Pretty new to FSX developing (but I know FS inside and out) I'm having major trouble with the code for a "simple" ? Pitch Trim switch as found in some light aircraftNone of the built in tags appear to work as I need ... OK .. 4 buttons on top of the control column... Pitch trim UP/down & Roll Trim L/RI appreciate they will probably be made in 2 seperate parts (Trim / Roll ) but I cannot figure out the required code :( FYI .. The below just wont work ... Pretty obviously to you that can see why LOL <PartInfo> <Name>button_trim_elevator_up_down</Name> <AnimLength>50</AnimLength> <Animation> <Parameter> <Sim> <Variable>ELEVATOR TRIM PCT</Variable> <Units>percent</Units> <Scale>-0.5</Scale> <Bias>50</Bias> </Sim> </Parameter> </Animation> <MouseRect> <Cursor>Hand</Cursor> <HelpID>HELPID_GAUGE_PITCH_TRIM</HelpID> <TooltipID>TOOLTIPTEXT_PITCH_TRIM</TooltipID> <MouseFlags>LeftSingle+LeftDrag+Wheel</MouseFlags> <CallbackJumpDragging> <YMovement> <Delta>1</Delta> <EventIdInc>ELEV_TRIM_DN</EventIdInc> <EventIdDec>ELEV_TRIM_UP</EventIdDec> </YMovement> </CallbackJumpDragging> </MouseRect> </PartInfo>HELP PLEASE !!!

Did you remember to create a custom GUID and add it to an <Animation...guid.../> entry? Every <PartInfo> section that has an <Animation> and or <MouseRect> entry must have one.Try this. Animate your switch 0 - 50 - 100 keyframes, with 50 the "neutral position."

<Animation name="button_trim_elevator_up_down"   guid="2ab0357c-05ba-40ef-b4c7-c5936e21b442" length="100" type="Sim" typeParam2="button_trim_elevator_up_down" typeParam="AutoPlay" />  <PartInfo>	<Name>button_trim_elevator_up_down</Name>	<AnimLength>100</AnimLength>	<Animation>	  <Parameter>		<Sim>		  <Variable>ELEVATOR TRIM PCT</Variable>		  <Units>percent</Units>		  <Scale>0.5</Scale>		  <Bias>50</Bias>		</Sim>	  </Parameter>	</Animation>	<MouseRect>	  <Cursor>Hand</Cursor>	  <HelpID>HELPID_GAUGE_PITCH_TRIM</HelpID>	  <TooltipID>TOOLTIPTEXT_PITCH_TRIM</TooltipID>	  <MouseFlags>LeftSingle+LeftDrag+Wheel</MouseFlags>	  <CallbackDragging>		<Variable>ELEVATOR TRIM PCT</Variable>		<Units>percent</Units>		<Scale>163.84</Scale>		<YScale>163.84</YScale>		<MinValue>-16384</MinValue>		<MaxValue>16384</MaxValue>		<EventID>ELEVATOR_TRIM_SET</EventID>	  </CallbackDragging>	</MouseRect>  </PartInfo>

Did you remember to create a custom GUID and add it to an <Animation...guid.../> entry? Every <PartInfo> section that has an <Animation> and or <MouseRect> entry must have one.Yep I have the GUID sorted, its just the FSX Parsing.. givin me a nightmare :)My FS9 xml was full of fancy stuff but I just dont know enough about the new version yet .. MANY Thanks for the code, I think you misunderstood slightly though, Unless I just explained it badly :) Its more of a button scenario than a switch I'm after .. Like er...... One button for trim UP, one for Trim Down.. make sense ??Then I can adapt it for Right and Left on the ailerons.There are 4 buttons on the top of the stick.. I'm sure you've seen the kinda thing ?Anyway, much appreciated, I'll try your code though today and get back to you, see if I can adapt it to a "button" rather than a switch

Hmm , No code defined error there .. seems strange, however let me try to explain a little better whats required here ..This diagram is what you'd see looking down onto the top of the control column grip Pitch Trim Down button --------------------- O Aileron Trim Left button ----------------- O ---- O ---- Aileron Trim Right ButtonPitch Trim Up Button ------------------------ OThe buttons dont even need to animate really as they are so small you wouldn't notice them being pushed in, however when "pressed" .. each button would increment the corresponding trim action untill "UN-Pressed"perhaps they need to be 4 seperate parts ?? One for each operation Pitch Up / Pitch Down / Aileron Left / Aileron Right ???(My head hurts) :)

Hmm , No code defined error there .. seems strange, however let me try to explain a little better whats required here ..This diagram is what you'd see looking down onto the top of the control column grip Pitch Trim Down button --------------------- O Aileron Trim Left button ----------------- O ---- O ---- Aileron Trim Right ButtonPitch Trim Up Button ------------------------ OThe buttons dont even need to animate really as they are so small you wouldn't notice them being pushed in, however when "pressed" .. each button would increment the corresponding trim action untill "UN-Pressed"perhaps they need to be 4 seperate parts ?? One for each operation Pitch Up / Pitch Down / Aileron Left / Aileron Right ???(My head hurts) :)

How about this ??? Pitch trim section <PartInfo> <Name>trimtab_elevator_key_UP</Name> <AnimLength>100</AnimLength> <Animation> <Parameter> <Sim> <Variable>ELEVATOR TRIM PCT</Variable> <Units>percent</Units> <Scale>0.5</Scale> <Bias>50</Bias> </Sim> </Parameter> </Animation> <MouseRect> <Cursor>UpArrow</Cursor> <HelpID>HELPID_GAUGE_PITCH_TRIM</HelpID> <TooltipID>TOOLTIPTEXT_PITCH_TRIM</TooltipID> <MouseFlags>LeftSingle</MouseFlags> <CallbackJumpDragging> <YMovement> <Delta>-3</Delta> <EventIdDec>ELEV_TRIM_UP</EventIdDec> </YMovement> </CallbackJumpDragging> </MouseRect> </PartInfo> <PartInfo> <Name>trimtab_elevator_key_DN</Name> <AnimLength>100</AnimLength> <Animation> <Parameter> <Sim> <Variable>ELEVATOR TRIM PCT</Variable> <Units>percent</Units> <Scale>0.5</Scale> <Bias>50</Bias> </Sim> </Parameter> </Animation> <MouseRect> <Cursor>DownArrow</Cursor> <HelpID>HELPID_GAUGE_PITCH_TRIM</HelpID> <TooltipID>TOOLTIPTEXT_PITCH_TRIM</TooltipID> <MouseFlags>LeftSingle</MouseFlags> <CallbackJumpDragging> <YMovement> <Delta>-3</Delta> <EventIdDec>ELEV_TRIM_DN</EventIdDec> </YMovement> </CallbackJumpDragging> </MouseRect> </PartInfo>

PLEASE... When posting code/script snippets, click on the code icon in the toolbar to wrap the code/script so the indenting is preserved. It makes it possible then to simply cut-and-paste directly from the forum to your modeldef.xml file! :( Okay, since you don't need any animation, we'll get rid of that.Since you want only left-click, let's get rid of the stupid mouse dragging BS as well.Here is the drop-dead simplest solution. Four <MouseRect> that only do one thing; send the designated key_event once when clicked (or repeat if the button is held down).

<PartInfo>  <Name>trim_elevator_trim_up</Name>  <MouseRect>	<Cursor>Hand</Cursor>	<TooltipText>Elev Trim Up</TooltipText>	<MouseFlags>LeftSingle+DownRepeat</MouseFlags>	<CallbackCode>	  (>K:ELEV_TRIM_UP)	</CallbackCode>  </MouseRect></PartInfo><PartInfo>  <Name>trim_elevator_trim_down</Name>  <MouseRect>	<Cursor>Hand</Cursor>	<TooltipText>Elev Trim Dn</TooltipText>	<MouseFlags>LeftSingle+DownRepeat</MouseFlags>	<CallbackCode>	  (>K:ELEV_TRIM_DN)	</CallbackCode>  </MouseRect></PartInfo><PartInfo>  <Name>trim_aileron_trim_left</Name>  <MouseRect>	<Cursor>Hand</Cursor>	<TooltipText>Elev Trim Up</TooltipText>	<MouseFlags>LeftSingle+DownRepeat</MouseFlags>	<CallbackCode>	  (>K:AILERON_TRIM_LEFT)	</CallbackCode>  </MouseRect></PartInfo><PartInfo>  <Name>trim_aileron_trim_right</Name>  <MouseRect>	<Cursor>Hand</Cursor>	<TooltipText>Elev Trim Dn</TooltipText>	<MouseFlags>LeftSingle+DownRepeat</MouseFlags>	<CallbackCode>	  (>K:AILERON_TRIM_RIGHT)	</CallbackCode>  </MouseRect></PartInfo>

MANY MANY Thanks Bill .. Also for the "code snippet" pasting, I'll remember thatLet me try these out and get back to you Speak to you soon with luck ;)Graham (Maltish) Brief explanation for Malt-ish, ex British now proudly living in Malta