error in model library

Hi, guys. I am learning a model in model library , the name is "domain_activation_llmatlab.mph".
I am doing the example step by step, but at last I find that i can't run the matlab code. There is a error in "ptgr1.set('lenged','on');"
Does anyone run this example? What is the problem? By the way, my matlab version is 2012b, comsol version is 4.3. The files are attach in the end. The error message is like this:

Error using llmatlb (line 33)
Java exception occurred:
Exception:
com.comsol.util.exceptions.FlException: Unknown property
Messages:
Unknown property
- Property: lenged


Stack trace:

at com.comsol.model.internal.impl.PropFeatureImpl.getPropValue(Unknown Source)

at com.comsol.model.internal.impl.PropFeatureImpl.a(Unknown Source)

at com.comsol.model.internal.impl.PropFeatureImpl$w.a(Unknown Source)

at com.comsol.model.internal.impl.PropFeatureImpl$w.execute(Unknown Source)

at com.comsol.model.clientserver.ClientManagerImpl$d.call(Unknown Source)

at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)