How to use "Par" while using euler lagranges equation.

hi there i want to know that de we need to give any specific sequence while using euler lagranges function in matlab ???

par = {m Jx Jy Jz...
    kx1 kx2 kx3 kx4 kx5 kx6 kx7 kx8 ky1 ky2 ky3 ky4 ky5 ky6 ky7 ky8 kz1 kz2 kz3 kz4 kz5 kz6 kz7 kz8...
    cx1 cx2 cx3 cx4 cx5 cx6 cx7 cx8 cy1 cy2 cy3 cy4 cy5 cy6 cy7 cy8 cz1 cz2 cz3 cz4 cz5 cz6 cz7 cz8};

thanks in advance ...

i am not getting solution in sequence and also some variables are also changed in solution

[Jan]

Please edit your question and add more information. "Using Euler-Lagrange equation" does not reveal, what you exactly do. Posting ypour code would be more useful.