I dont see wall when placing pillar

[Sajmon]

when i place fillar by thisc command: <pillar brefy="terrain" trefy="inrun-top" t="Textures\concrete1.png" m="Materials\material1.xml" c="0xf2e5c7" x1="-5" x2="0" refrz="inrun-right" reflz="inrun-left" lz="-3" rz="5" top="true" /> I cant see the walls of it, how can i fix this please help me