*** WARNING in VARIABLE command
  Note that only the first 8 characters of variable names are used in the output.
  Shorten variable names to avoid any confusion.
*** ERROR in MODEL command
  Unknown variable(s) in an ON statement:  Y1
DATA:
  FILE IS 9_1_dataPA.dat;
VARIABLE:
  MISSING ARE ALL (-99);
  NAMES ARE exercise
  hardiness fitness
   stress illness;
  USEVARIABLES ARE exercise
  hardiness
  fitness
  stress illness;

define:
X1= exercise;
X2= hardiness;
Y1= fitness;
Y2= stress;
Y3= illness;

MODEL:
!STRUCTUAL MODEL
Y1 ON X1 ;
Y1 ON X2;
Y2 ON X1 X2 Y1;
Y3 ON Y1 X1 X2 Y2;
X1 WITH X2;

OUTPUT:STANDARDIZED;