failOnError in .cobolBuld defaults to false

Using Micro Focus Enterprise Developer for Eclipse v.2.2.    It appears that the property failOnError in the ant file .cobolBuild, which the IDE generates, is defaulting to a value of 'false'.    I can change this to 'true' by editing the .cobolBuild file but then if I change any other project properties via the IDE it gets set back to 'false' again.  How can I keep this value set to 'true'?

Thanks,

Ray H.