when using a scalar node, and passing in true, will it cast the string to a bool? If not, you may need to change https://github.com/aequasi/cache-bundle/pull/29/files#diff-a9f399ddf2e64d9d2f3899a1f1a856e5R160
and https://github.com/aequasi/cache-bundle/pull/29/files#diff-a9f399ddf2e64d9d2f3899a1f1a856e5R161