Remove leading Zeros from the mapped context node(Table)

HI,
I have he following requirement:
In the Leave approval application , in the Approver worklist we have the coloumn to display the resuqester's Perner.
The perner starts with leading zeros. We have to remove these leading zeros.
I have refer the following threads:
Removing leading zeros in a column
How to remove leading zeroes of string
and wiki document:
https://www.sdn.sap.com/irj/scn/wiki?path=/display/java/remove%252bleading%252band%252btrailing%252bzeros%252bfrom%252ba%252bstring
but I am not able to create the calculated attribute in the Mapped Node( NWDS is not allowing indicating it is not allowed for mapped nodes.)
Any pointer how I can remove leading Zeros from existing column?
If I create the calculated attribute outside the mapped node then it is taking only the first value of the mapped node.
Please note we do not want to modify the RFC.
_vishal

Hi,
Thanks for inputs,
Now I created a test application where the original structure is as follows in the View Controller:
1) Context -> Z_Portal_Test_Input (mapped Node/folder) -> IT_Tab_Input(mapped Node/folder) -> Eid(Mapped attribute)
note: this attribute Eid has the values (01, 02,03,04,05)
2)Context -> Z_Portal_Test_Input (mapped Node/folder) -> Output(mapped Node/folder) ->IT_Tab_Input(mapped Node/folder) -> Eid(Mapped attribute)
Now as per your suggestion I created another node like this
Context -> Z_Portal_Test_Input (mapped Node/folder) ->testnode(value node) ->testValue(value attribute)
testnode cardinality is 1..1 and singlton = false
In the Layout
The tablecell editor of one coloumn is mapped to text     Z_Portal_Test_Input.testnode.testvalue
It is expected that this will show the values like(1,2,3,4,5) but it is showing value(1,1,1,1,1)
The code of get method is:
public java.lang.String getTestnodeTestvalue(IPrivateTestpernerView.ITestnodeElement element)
    //@@begin getTestnodeTestvalue(IPrivateTestpernerView.ITestnodeElement)
      String msg =wdContext.nodeZ_Portal_Test_Input().nodeOutput().nodeIt_Itab().currentIt_ItabElement().getEid();
        return removeLeadingZeroes(msg);
    //@@end
the functon removeLeadingZeroes(msg) is implemented as per the wiki link.
What wrong I am doing/ missing....
_vishal

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Remove leading Zeros from the mapped context node(Table)

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