Question: System of equations

I don't have much knowleged about Maple but following the help I was hoping I could solve the system of equations below. Any help is appreciated:

System of equations:

> e1 := (1+Psi)/a^.8-.8*Psi/a^.8+.280*lambda*f^.3/(l^.3*a^1.8)-eta = 0;
> e2 := (1+Psi)/n^.8-.8*Psi/n^.8-.56*lambda*f^.3/(l^.3*n^1.8)-eta = 0;
> e3 := (1+Psi)/c^.8-.8*Psi/c^.8-eta = 0;
> e4 := -(1+Psi)/(1-f-l)^.2-.2*Psi*(f+l)/(1-f-l)^1.2+.3*l^.7*eta/f^.7+.21*lambda*(-0.5e-1/a^.8+.9/n^.8)/(f^.7*l^.3)-.2*lambda/(1-f-l)^1.2 = 0;
> e5 := -(1+Psi)/(1-f-l)^.2-.2*Psi*(f+l)/(1-f-l)^1.2+.7*f^.3*eta/l^.3-.21*lambda*f^.3*(-0.5e-1/a^.8+.9/n^.8)/l^1.3-.2*lambda/(1-f-l)^1.2 = 0;
> e6 := [(f+l)/(1-f-l)^.2-0.8e-1/c^.8-.72/c^.8-0.8e-1/a^.8-.72/n^.8] = 0;
> e7 := .7*f^.3*(-0.5e-1/a^.8+.9/n^.8)/l^.3-1/(1-f-l)^.2 = 0;
> e8 := f^.3*l^.7+[-.1/c^.8-.9/c^.8-.1/a^.8-.9/n^.8]-1 = 0;
 

> > fsolve({e2, e8, e6, e3, e5, e1, e4, e7}, {n = 0 .. 2, c = 0 .. 3, f = 0 .. 1, l = 0 .. 1, Psi = 0 .. 4, lambda = 0 .. 5, a = 0 .. 2, eta = .5});
 

The answer I get is:

Error, (in fsolve) Case of systems of equations involving procedures is not implemented yet
 

Any suggestion? Am I missing something? Thanks