NpcBorder Block can’t work properly

**Issue description:** NpcBorder Block doesn't run properly when making settings of it. None of the settings I change work as expected.

**If crashed, link to crash report (use a site such as pastebin):**

**Versions:**
* Minecraft: 1.7.10
* Forge: 
* CustomNPC+: 

**Can it be reproduced with *just* CustomNPC+? If not, list the other mods *required* to reproduce the issue.**