ansible register variable

gistfile1.txt

running from Ansible works :

→ ansible 192.168.13.42 -m shell -a "update-alternatives --display java | grep currently | awk '{print \$5}'" -u root -k [master]
SSH password: 
192.168.13.42 | success | rc=0 >>
/usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java


running from playbook  

TASK: [return java_alternatives [DEBUG]] ************************************** 
ok: [192.168.13.42] => {"item": "", "msg": "jdk = ,,,,,,,,,,"}

TASK: [update-alternatives OpenJDK] ******************************************* 
fatal: [192.168.13.42] => error while evaluating conditional: {% if {u'changed': True, u'end': u'2013-09-25 04:23:54.952150', u'stdout': u'/usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java', 'item': '', u'cmd': u"update-alternatives --display java | grep currently | awk {'print $5'} ", u'rc': 0, u'start': u'2013-09-25 04:23:54.930993', u'stderr': u'', u'delta': u'0:00:00.021157', 'invocation': {'module_name': 'shell', 'module_args': u"update-alternatives --display java | grep currently | awk {'print $5'}"}, 'stdout_lines': [u'/usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java']} != "/usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java" %} True {% else %} False {% endif %}

FATAL: all hosts have already failed -- aborting



this is a part of the playbook 

- name: detect and register current java      
 24   action: shell update-alternatives --display java | grep currently | awk '{print \$5}'                                         
 25   register: java_alternatives
 26 
 27 - name: update-alternatives Oracle JDK
 28   action: command update-alternatives --set java /usr/java/jdk1.6.0_43/bin/java
 29   when: java == "oraclejdk"
 30   changed_when: $java_alternatives != "/usr/java/jdk1.6.0_43/bin/java"
 31 
 32 - name: return java_alternatives [DEBUG]
 33   action: debug msg="jdk = $ENV(java_alternatives)"