Wso2 - call sequence with get-property - properties

Question

This is the scenario:
- Three sequences: s1, s2, s3
- One variable stored in a registry (localEntry) sets to 1
- Get the seqName with a concat
- Try to call the sequence with get-property
What I've done until now:
1) Extract the value
<property name="getSequence" expression="get-property('registry','conf:repository/myVersion2.xml')" scope="default" type="OM"/>
<log level="custom">
<property name="TestVersion::localEntry" expression="$ctx:getSequence//localEntry"/>
</log>
2) Concat
<property name="seqName"
expression="concat('s', $ctx:getSequence//localEntry)"
scope="default"
type="STRING"/>
3) Call the sequence
<sequence key="get-property('seqName')"/>
4) Execute the test
5) Get error:
TID: [0] [ESB] [2015-07-08 10:27:36,325] INFO {org.apache.synapse.mediators.builtin.LogMediator} - TestVersion::info = setting property {org.apache.synapse.mediators.builtin.LogMediator}
TID: [0] [ESB] [2015-07-08 10:27:36,327] INFO {org.apache.synapse.mediators.builtin.LogMediator} - TestVersion::localEntry = 1 {org.apache.synapse.mediators.builtin.LogMediator}
TID: [0] [ESB] [2015-07-08 10:27:36,327] INFO {org.apache.synapse.mediators.builtin.LogMediator} - TestVersion::Sequence = s1 {org.apache.synapse.mediators.builtin.LogMediator}
TID: [0] [ESB] [2015-07-08 10:27:36,327] INFO {org.apache.synapse.mediators.builtin.LogMediator} - TestVersion::info = filter1 {org.apache.synapse.mediators.builtin.LogMediator}
TID: [0] [ESB] [2015-07-08 10:27:36,327] INFO {org.apache.synapse.mediators.builtin.LogMediator} - TestVersion::info = LOG_S1_TRUE {org.apache.synapse.mediators.builtin.LogMediator}
TID: [0] [ESB] [2015-07-08 10:27:36,329] ERROR {org.apache.synapse.mediators.base.SequenceMediator} - Sequence named Value {name ='null', keyValue ='get-property('seqName')'} cannot be found {org.apache.synapse.mediators.base.SequenceMediator}
So the problem seems how the information stored in 'seqName' could be read by the sequence as the sequence name and not as a string.
I tried also with
<sequence key="{get-property('seqName')}"/>
But this doesn't work too...
Thank you in advance.
Claudio

Answer 1

Fixed!
<sequence xmlns:local="ws.apache.org/ns/synapse" key="{get-property('seqName')}"/>
Thanks to everybody!
Regards
Claudio