我编了一个二次规划的程序如下：
MODEL:SETS:YB/1..n/:F1,F2,F3,F4,F5,F6,F7,R,E;BL/1..7/:X;ENDSETS
DATA:R=@file('C:\Users\Bryant  Liu\Desktop\Lingodata\Rit.txt') ;F1=@file('C:\Users\Bryant  Liu\Desktop\Lingodata\RGG.txt') ;F2=@file('C:\Users\Bryant  Liu\Desktop\Lingodata\RGV.txt') ;F3=@file('C:\Users\Bryant  Liu\Desktop\Lingodata\RMG.txt') ;F4=@file('C:\Users\Bryant  Liu\Desktop\Lingodata\RMV.txt') ;F5=@file('C:\Users\Bryant  Liu\Desktop\Lingodata\RSG.txt') ;F6=@file('C:\Users\Bryant  Liu\Desktop\Lingodata\RSV.txt') ;F7=@file('C:\Users\Bryant  Liu\Desktop\Lingodata\RBD.txt') ;n=25532;ENDDATA
@FOR(YB(I):E(I)=R(I)-X(1)*F1(I)-X(2)*F2(I)-X(3)*F3(I)-X(4)*F4(I)-X(5)*F5(I)-X(6)*F6(I)-X(7)*F7(I));EE=@SUM(YB(I):E(I))/N;VARI=@SUM(YB(I):(E(I)-EE)^2)/(N-1);
MIN=VARI;@SUM(BL(J):X(J))=1;@FOR(BL(J):@BND(0,X(J),1));END!N是样本容量;
但是一运行就提示

invalid implicit set definition
5] YB/1...n/:F1,F2,F3,F4,F5,F6,F7,R,E;

请哪位大侠帮我检查一下程序，谢谢。