Hi all,I've been working on adding a few things to the default 737-800 and I'm having trouble getting macros to work. I'm trying to add V speeds to the pfd and have a couple of macros do some calculations to get the speeds based on the aircraft's weight. If I get these working, then I'll add some other calculations to it too.Here's what I have:

<Macro Name="baseweight">82000</Macro>		<Macro Name="basev1">102</Macro>		<Macro Name="incrvr">(A:TOTAL WEIGHT, pounds) @baseweight - 8 / 5 * (>@g:gincrv1)</Macro>		<Update>			@basev1 (@g:gincrv1) + (>L:newv1,enum)		</Update>		<Element>			<Position X="10" Y="10"/>			<FormattedText X="38" Y="12" Font="Arial Black" FontSize="11" Adjust="Center" VerticalAdjust="Bottom" Color="0xF0D0D0" BackgroundColor="#080808" Bright="Yes">				<String>					%((L:newv1,enum))%				</String>			</FormattedText>		</Element>

I'm trying to at least display the V1 number to see if it's working, but nothing shows up. I've tried various trypes of variables, but none seem to work. I made the (L:newv1,enum) a macro to see if it worked that way, but it didn't.I was originally trying to put it in a shift statement, where it moves a text "-1" on the airspeed strip. Here's the shift statement I tried.

                        <Shift id="Shift">                        	<Scale>0.000,1.567</Scale>                        	<Expression id="Expression">                            	<Minimum>-100.000</Minimum>                            	<Maximum>100.000</Maximum>                            	<script>(A:Airspeed select indicated or true, knots) (L:newv1,enum) -</Script>                        	</Expression>                    	</Shift>

Again, I've tried using the g: macro instead of L: but nothing works. It seems like half the time the whole pfd becomes blank and the other half, the "-1" text never shows. I know the shift statement works, because at first I was just using a constant number to test it out and get the positioning correct.Thanks.David

Hi,Try, :<String>%((L:newv1,enum))%!d!</String>Jan

Hi,Try, :<String>%((L:newv1,enum))%!d!</String>Jan

Hi Jan,That didn't work for some reason. It seems that the macros I write don't want to work at all. I did however get it to work, sort of. I got it to calculate V1 and put it on the airspeed strip with this:

<Update id="V1 Calc">  <script>102 (A:TOTAL WEIGHT, pounds) 82000 - 8000 / 5 * near + (>L:newv1,enum)</Script></Update>

And this puts it on the airspeed strip:

<Element id="V1">  <FloatPosition>0.000,0.000</FloatPosition>  <Element id="V1"> 	<FloatPosition>0.000,0.000</FloatPosition> 	<GaugeText id="GaugeText">   	<Axis>0.000,8.000</Axis>   	<BackgroundColor>Black</BackgroundColor>   	<Bright>True</Bright>   	<FontColor>Cyan</FontColor>   	<FontHeight>8</FontHeight>   	<GaugeString>-1</GaugeString>   	<HorizontalAlign>CENTER</HorizontalAlign>   	<Size>20,13</Size>   	<Transparent>True</Transparent> 	</GaugeText>   </Element>   <Shift id="Shift">  	<Scale>0.000,1.567</Scale>  	<Expression id="Expression"> 		<Minimum>-100.000</Minimum>      	<Maximum>100.000</Maximum>      	<script>(A:Airspeed select indicated or true, knots) (L:newv1,enum) -</Script> 	</Expression>  </Shift></Element>

That all works fine. But when I start to add any others, either the whole gauge goes blank, or V1 becomes 0.Whenever I put in this line, without displaying Vr on the gauge, V1 becomes 0. Any ideas why?

<Update id="SpeedVR Calc">  <script>102 (A:TOTAL WEIGHT, pounds) 82000 - 8000 / 6 * near + (>L:speedVr,enum)</Script></Update>

I can't figure out why that would cause the (L:newv1,enum) to become 0.Thanks,David

Hi,Sorry, see fsx.Only tested in fs9:<Macro Name="baseweight">82000</Macro><Macro Name="basev1">102</Macro><Update>@basev1 (A:TOTAL WEIGHT,pounds) @baseweight - 9000 / 5 * near + (>L:incrv1,number)@basev1 (L:incrv1,number) + (>L:newv1,number) @basev1 (A:TOTAL WEIGHT,pounds) @baseweight - 8000 / 6 * near + (>L:incrvR,enum) @basev1 (L:incrvR,number) + (>L:speedVr,enum) </Update><Element><Position X="10" Y="10"/><FormattedText X="100" Y="300" Font="Arial Black" FontSize="16" Adjust="Center" VerticalAdjust="Bottom" Color="0xF0D0D0" BackgroundColor="#080808" Bright="Yes"><String>V1 %((L:newv1,number))%!d!\nVR %((L:speedVr,number))%!d!\n</String></FormattedText></Element>and this works.Other way withour macros and update:<Element><Position X="10" Y="200"/><FormattedText X="100" Y="300" Font="Arial Black" FontSize="16" Adjust="Center" VerticalAdjust="Bottom" Color="0xF0D0D0" BackgroundColor="#080808" Bright="Yes"><String>%(102 (A:TOTAL WEIGHT,pounds) 82000 - 9000 / 5 * near + (>L:incrv1,number) 102 (L:incrv1,number) + (>L:newv1,number) )%((L:newv1,number))%!d!\n%(102 (A:TOTAL WEIGHT,pounds) 82000 - 8000 / 6 * near + (>L:incrvR,number) 102 (L:incrvR,number) + (>L:speedVr,number) )%((L:speedVr,number))%!d!\n</String></FormattedText></Element>Hope it helps,Jan

Do keep in mind that @Macros are nothing magic. They are simply a useful shorthand technique, which provide a less verbose way of creating/editing scripts.They are nothing more than 1:1 replacements for a (possibly) very l o n g s t r i n g o f t e x t . :(

Jan,Thanks for your help. After changing a few things in what you gave me, I finally got all of my v speeds to work correctly.Bill,They sure seem like magic, because when I used the code Jan gave me with the macros, the number came out to be 0, yet when I just used the number the macro represented, it worked.David

When I used "magic" I simply meant that @Macros aren't function() calls, subroutines, or any other fancy-schmanzy coding trick...They also don't always work as expected, or at all for that matter! :(