error in model library

Hi, guys. I am learm 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? 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)