JIM AND ROMAN THANKS ALOT.Roman, your code is working great Thanks

I knew there must be a more elegant way using XML...I must try and get my head around RPN...Glad you got it sortedRegardsJim

Hi,Maybe this code could be useful as well, its shows the EXACT way a real Boeing-type altimeter works. Also is a good example of advanced XML technics.Put this macro before any of the s of the gauge: (A:Indicated Altitude, feet) sp0 l0 int 10 @2 pow % 10 @2 1 - @1 1 - - 0 max pow / intThen, inside the for the 10 thousands digit: @AltDigit(4,4) s1 9980 >=l1 100 % 80 - 20 / * @AltDigit(1,5) +For the thousands,@AltDigit(3,3) s1 980 >=l1 100 % 80 - 20 / * @AltDigit(1,4) +For the hundreds,@AltDigit(2,2) s1 80 >=l1 80 - 20 / * @AltDigit(1,3) +And for the tenths (A:Indicated Altitude, feet) abs 100 % 10 / Short and effective :-) Tom