Token t = ((Variable) attribute).getToken();
return ((BooleanToken) t).booleanValue();
} else if (attribute instanceof Settable) {
BooleanToken t = new BooleanToken(((Settable) attribute)
.getExpression());
return t.booleanValue();
} else {
throw new IllegalActionException(this,
"The specified model does not have an evaluatedValue parameter.");
}
}