jsf - Primefaces datatable: multiple selection list is in another list -


i have question, how map datatable multiple selecion in list element of list:

<p:datatable id="subdatatable#{index}" value="#{objectbean.subdatamodels.get(index)}"     selection="#{objectbean.selectedlists.get(index)}" var="subrowtable"     rowkey="#{subrowtable.primarykeyobj.tostring()}">

with index int variable, , in objectbean

private list<list<object>>  subdatamodels; // , getter, setter  private list<list<object>>  selectedlists; // , getter, setter

i got error:

javax.faces.facesexception: multiple selection reference must array or list datatable

i need solution case or related topic it. help.


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