Help me with Simulink function

 1function M1 = fcn(lsecc,L,nelesecc,rsecc,ngdlglobal,ntotalsecc)
 2M1=zeros(ngdlglobal,ngdlglobal);
 3% x=zeros(ngdlglobal);
 4i=0;
 5for a=1:ntotalsecc
 6    for b=1:nelesecc(a)
 7         i=i+1;
 8      M1=zeros(8);
 9      M1(1,1)=156;  M1(1,4)=-22*L(a);  M1(1,5)=54;        M1(1,8)=13*L(a);
10      M1(2,2)=156;  M1(2,3)=22*L(a);   M1(2,6)=54;        M1(2,7)=-13*L(a);
11                    M1(3,3)=4*L(a)^2;  M1(3,6)=13*L(a);   M1(3,7)=-3*L(a)^2; 
12                    M1(4,4)=4*L(a)^2;  M1(4,5)=-13*L(a);  M1(4,8)=-3*L(a)^2;
13                                       M1(5,5)=156;       M1(5,8)=22*L(a);
14                                       M1(6,6)=156;       M1(6,7)=-22*L(a);
15                                                          M1(7,7)=4*L(a)^2;
16                                                          M1(8,8)=4*L(a)^2;
17     for m=1:8
18       for n=m:8
19           M1(n,m)=M1(m,n);
20       end
21     end
22    end 
23end

A error is: Size mismatch (size [:3136 x 1] ~= size [8 x 8]). The size to the left is the size of the left-hand side of the assignment.

Function 'MATLAB Function' (#48.190.192), line 8, column 7: "M1" Launch diagnostic report.

[ES]

What are teh values of L, nelesecc,,ngdlglobal,ntotalsecc ?