Problem with checkbox group in row popin of table.

In table row popin I have kept Check Box Group.I have mapped  the texts property of checkbox group to the attribute which is under the subnode of the table.the subnode properties singleton=false,selectioncardinality=0-n,and cardinality=0-n.
if there are 'n' number of records in the table.each record will have its own row popin and in the row popin there is check box group.
the check box group in the row popin  belongs to that perticular row.
but the checkboxegroup values in row popins of all the  rows are getting changed to the row which is lead selected.
The same scenario  (table in the row popin is showing the values corresponding to its perticular row and all the table values in popin are not getting changed to the one lead selected in the main table)is working fine with the table in place of  checkbox group in row popin with datasource property of table  binded to the subnode
I cant trace out the problem with checkbox group in place of table.
Please help me in this regard.I have to place check box group in place of table in row popin.
Thanks and Regards
    Kiran Kumar K

I have done the same thing successfully with normal check box ui element. Try using check box in your tabel cell editor instead of check box group.

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