Lookup addPreSearch function Working Problem.

I am filtering the Source Campaign lookup based on Optionset Originating Lead

Scenario 1: I am filtering if originating Lead is "Employee- Frank Hooper" then show all campaigns.
Scenario 2: for all other Originating Lead value it showed specific Campaigns.

Problem:- if using Scenario 1 it work fine and but when using scenario 2 after that go again on scenario 1 it stop working not any result in lookup.
I hope it well explained.

// Filter Source Campaign Lookup
function preFilterLookup() {
if(Xrm.Page.getAttribute("aaj_originatinglead").getText()=="Employee - Frank Hooper")
{
     Xrm.Page.getControl("campaignid").addPreSearch(function () {
     frankHooperLookupFilter();
   });
}

else
{
     Xrm.Page.getControl("campaignid").addPreSearch(function () {
     addLookupFilter();
   });
}

}

function frankHooperLookupFilter() {
        fetchXml = "<filter type='and'><condition attribute='statecode' operator='eq' value='0'/></filter>";
        Xrm.Page.getControl("campaignid").addCustomFilter(fetchXml);
}

function addLookupFilter() {

    var originatingLead = Xrm.Page.getAttribute("aaj_originatinglead").getValue();
    if (originatingLead != null) {
        fetchXml = "<filter type='and'><condition attribute='aaj_originatinglead' operator='eq' value='" + originatingLead + "' /></filter>";

        Xrm.Page.getControl("campaignid").addCustomFilter(fetchXml);
    }

}