<cfscript>
excelColumnList = 'YR,MNTH,ANNIV,FIRST NAME,LAST NAME,EMAIL,NOTES';
mappedColumnList=  ',,,YEAR,,MONTH,,First Name,Last Name,Email,COMMENTS';
mappedColumn= 'Last Name';

while(left(mappedColumnList,1)==",") {
  mappedColumnList = right( mappedColumnList,(len(mappedColumnList)-1) )

}

local.index = ListFindNoCase(mappedColumnList, mappedColumn,',', true);

local.returnValue = ListGetAt(mappedColumnList,local.index,",",true) ;

writeDump(local.returnValue);
</cfscript>