The generator matrix

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

generates a code of length 90 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 90.

Homogenous weight enumerator: w(x)=1x^0+48x^90+2x^92+8x^94+3x^96+2x^108

The gray image is a code over GF(2) with n=360, k=6 and d=180.
This code was found by Heurico 1.16 in 0.265 seconds.