primefaces datatable rowEditor not working for p:selectManyMenu - jsf

Question

I have implemented primefaces roweditor for components like inputtext,autocomplete . I am trying to implement for selectmanymenu but could not get the result. If i use cell editor then i need to use input and output value should refer the same . Here selectmanymenu value would be the list not a single variable. So i am not sure how to handle it.
I would like know the proper implementation of p:selectManyMenu with p:cellEditor. I am not sure that we have option to do this also.
I have searched in stackoverflow as well as in google, did not get any answers for this.
Please help me out.
Below is the code details
<p:dataTable
value="#{projectViewBean.projectListToEdit}"
editable="true" var="proj" id="editProjLst">
<p:ajax event="rowEdit" listener="#{projectEntryBean.onEdit}"/>
<p:ajax event="rowEditInit" listener="#{projectEntryBean.onRowEditInit}"></p:ajax>
<p:column headerText="Project Status" id="sts">
<p:cellEditor>
<f:facet name="output">
<p:outputLabel value="#{proj.projectStatus}"></p:outputLabel>
</f:facet>
<f:facet name="input">
<p:selectOneMenu
value="#{proj.projectStatus}"
id="pjstval">
<f:selectItems value="#{projectEntryBean.projectStatusList}"
id="pjstlst" />
</p:selectOneMenu>
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="Phase" id="dbphase">
<p:cellEditor>
<f:facet name="output">
<p:outputLabel value="#{proj.projectPhaseValue}"></p:outputLabel>
</f:facet>
<f:facet name="input">
<p:autoComplete
completeMethod="#{projectEntryBean.autoSearchProjectPhase}"
value="#{proj.projectPhaseValue}"
dropdown="true" scrollHeight="200" emptyMessage="No Phase Found"
minQueryLength="1" forceSelection="true"></p:autoComplete>
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="Project Manager" id="pjtmgr">
<p:cellEditor id="pm">
<f:facet name="output">
<p:outputLabel value="#{projectEntryBean.pjtView.projectUserList}"></p:outputLabel>
</f:facet>
<f:facet name="input">
<p:selectManyMenu
value="#{proj.projectManager}"
id="projectmanagerval">
<f:selectItems value="#{projectEntryBean.pjtView.projectUserList}"
id="pmlst" />
</p:selectManyMenu>
</f:facet>
</p:cellEditor>
</p:column>
<p:column style="width:32px">
<p:rowEditor />
</p:column>
</p:dataTable>

Answer 1

Finally i am able to achieve it by using converter. It might be helpful for someone. Please see the solution
<p:column headerText="Project Manager" id="pjtmgr">
<p:cellEditor id="pm">
<f:facet name="output">
<p:outputLabel value="#{proj.projectManager}">
<f:converter converterId="vendorConverter"></f:converter>
</p:outputLabel>
</f:facet>
<f:facet name="input">
<p:selectManyMenu
value="#{proj.projectManager}"
id="projectmanagerval">
<f:selectItems value="#{projectEntryBean.pjtView.projectUserList}"
id="pmlst" />
</p:selectManyMenu>
</f:facet>
</p:cellEditor>
</p:column>