How to input data into maple with unknown constants?

I'm about to give up on Maple 14. The equations are x+2y+3z=4, x +ky+4z=6, x+2y+ (k+2)z=6. I entered the equations and got up to this point. > eqlist := [eqn1, eqn2, eqn3]; and got the equations repeated back to me

> varlist := [x, y, z]; and got the 3 variables repeated back to me. When I tried to generate the matrix, I put in. A := genmatrix(eqlist, varlist, flag), and got genmatrix([x+2*y+3*z = 4, x+ky+4*z = 6, x+2*y+z(k+2) = 6], [x, y, z], flag). What did I enter wrong? did I have to incorporate K in some way in an input equation?