Global Variables?

[compsystems]

Even with correct data generates an error, I think because a reserved variable is global for all programs and not a specific one.

The compiler should say the cause of the problem, instead of just SYNTAX ERROR

PHP Code:

X:=100;
M1:=MAKEMAT(0,100);
export testUserAndAppVars()
begin
  PRINT();


  //USER VARS
  A := 1; B:=2;
  X := 5.9;
  L1 := {1,{2},"HELLO"};
  M1 := [[1,2,3],[4,5,6]];
  Z1 := 3+4*i;


  // APP VARS
  PRINT( "F(X) Function app user symbolic variables" );
  Function.F1 := 'X^3-6*X^2+11*X-6'; // OR F1 := 'X^3-6*X^2+11*X-6'; OR CAS("F1(X):=X^3-6*X^2+11*X-6"); or sto('X^3-6*X^2+11*X-6',F1);
  F2 := 'X^2-3*X+2';
  F0 := 'X^3-0*X^2+X';
  CAS("F3(X):=X^3"); // usando CAS CMD
  CAS("F4(X):=X^3-2");
  sto('X+5',F5); // usando STO CMD

  PRINT( "F1(X) = " + Function.F1 );
  PRINT( "F2(X) = " + Function.F2 );
  PRINT( "F3(X) = " + Function.F0 );
  PRINT( "" );


  PRINT( "V(X,Y) Advanced Graphing app user symbolic variables" );    
  V1 := 'X^2+Y^2 = 10';
  V2 := '2*X-3*Y = 6';
  V3 := 'Y MOD X = 3';
  Advanced_Graphing.V4 := Function.F1+'Y'; // usando dot


  PRINT( "V1(X,Y) = " + Advanced_Graphing.V1 );
  PRINT( "V2(X,Y) = " + Advanced_Graphing.V2 );
  PRINT( "V3(X,Y) = " + Advanced_Graphing.V3 );
  PRINT( "" );


  PRINT( "{ X(T), Y(T) } PARAMETRIC app user symbolic variables" ); 
  Y1 := 'SIN(4*T)';
  X1 := 'SIN(6*T)';
  PRINT( "{ X1(T) = " + Parametric.X1 + ", Y1(T) = " + Parametric.Y1 + " }" );
  PRINT( "" );

  PRINT( "R(THETHA) POLAR app user symbolic variables" );
  R1 := 'SIN(θ)';
  PRINT( "R(θ) = " + Polar.R1 );
  PRINT( "" );

  PRINT( "EQ() SOLVE app user symbolic variables" );
  E1 := 'X^2';
  E2 := '2*X+3';
  PRINT( "{ E1(X) = " + E1 + ", E2(X) = " + E2 + " }" );
  PRINT( "END" );

  //User Vars
  // {"A", "B", "X","L1","M1","Z1","F1","F2","F0","V1","V2","T"})

  //F(X) Function symbolic variables
  // { "F0","Function.F1","F1", "F2","F3","F4","F5","F6","F7","F8","F9" }

  // V(X,Y) Advanced Graphing symbolic variables 
  // { "V0","V1","V2","V3","V4","V5","V6","V7","V8","V9" }

  // { X(T), Y(T) } PARAMETRIC symbolic variables
  // { "X0","X1","X2","X3","X4","X5","X6","X7","X8","X9" }
  // { "Y0","Y1","Y2","Y3","Y4","Y5","Y6","Y7","Y8","Y9" } 

  //R(THETHA) POLAR symbolic variables
  // { "R0","R1","R2","R3","R4","R5","R6","R7","R8","R9" }


  return "Done";
end;