The generator matrix

 1  0  1  1  1  1  1  1  1
 0  1  1  2  4  3  0  0  0
 0  0 3X  0  0  X  0 4X  X
 0  0  0  X  0 3X 2X 3X 3X
 0  0  0  0 3X 4X 4X 2X 3X

generates a code of length 9 over Z5[X]/(X^2) who´s minimum homogenous weight is 20.

Homogenous weight enumerator: w(x)=1x^0+80x^20+544x^25+2440x^30+12500x^32+6080x^35+50000x^37+6060x^40+420x^45

The gray image is a linear code over GF(5) with n=45, k=7 and d=20.
This code was found by Heurico 1.16 in 0.332 seconds.