Mapping issue: from unbound node to two single fields

Hello,
I have a source message with a node that is 0... unbounded.
The node contains a field named "component_name" with occurence  1..1.
The target message contains only two single fields (component1, component2) and the task is to provide the first two occurences to these fields.
node occ.1
   component <modul beta>      ->    component1
node occ.2
   component <modul omega>      ->    component2
We can expect to have any case like these:
node is 0   -> no components provided
node is 1  -> one component provided  (usual case) , so second field will be empty
node is 2 -> two components provided
node is > 2 -> need to pick the first two components to provide them to the target fields.
Does anybody here have an idea how to solve this mapping issue?
Your ideas are really welcome!
Best regards
Dirk

Stefan's solution is very good, alternatively, if you are sure that you will always have at least two items you can do
source -> copyValue[0]-> target
source -> copyValue[1]-> target
please note: if you don't have at least two items in your source the copyValue function will throw an exception

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    Stopping iSCSI daemon:
    iscsid dead but pid file exists [  OK  ]
    Starting iSCSI daemon: [  OK  ]
    [  OK  ]
    Setting up iSCSI targets: iscsiadm: No records found!
    [  OK  ]
    [root@rac1 ~]#
    Moreover, tried to discover the targets, unfortunately no message is getting displayed after execution of this below command.
    [root@rac1 ~]# iscsiadm -m discovery -t sendtargets -p 192.168.37.200
    [root@rac1 ~]#
    The quick response will be appreciated as my whole test case is down as of now due storage issues.
    Thanks,
    Arch.

    Are you running a firewall that needs to be adjusted to support your changed Openfiler IP network?

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