How to use a 4d variable achieved from a function as a property in matlab app designer?

I have a function which takes few inputs and then returns some values which contain 3 variables x,y,z (all are 3d arrays) and a variable N1 which is a 4d array. I am trying to plot N1 using slice but I am getting error as there seems to be some problem when I am trying to use N1 as a property. Please help me out.

here I have tried to define Lz, yz, and zz (3d coordinates) and N1 as property. Can anyone suggest what might be the problem?