The generator matrix

 1  1  1  1  1  1  1
 0  X  0 X+6  3  X 2X
 0  0  X 2X+6 2X+6  X  3

generates a code of length 7 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 10.

Homogenous weight enumerator: w(x)=1x^0+36x^10+90x^11+28x^12+144x^13+1602x^14+48x^15+144x^16+90x^17+2x^18+2x^21

The gray image is a code over GF(3) with n=63, k=7 and d=30.
This code was found by Heurico 1.16 in 0.0014 seconds.