Why isn't this working (Modular Force Field System)

[Some Screen Shots](http://imgur.com/a/KbcCS)

I am trying to set up and test an interdiction matrix. Right now just testing if it can prevent me from breaking blocks. I put in an access card with all privileges except breaking blocks. Put in the block alter module along with 2 scale modules - but I can still place and break blocks right next to the interdiction matrix.

Anyone know what I'm doing wrong?