Hi I cannot find .OP Where is it?Place a generic Zener from the default lib on your page. Click on the letter D. Edit the text box to replace "D" with "Z5p6" ( do not click on the body of the Zener symbol itself).
Now paste the string on the next line into the text box with comes from clicking on .OP
.model Z5p6 D(Is=1.5n Rs=.5 Cjo=185p nbv=3 bv=5.6 Ibv=1m)
The .model statement has to be placed somewhere on the schematic. See here:
View attachment 108658