Compare list items in if condition.

Hello,

I am running issues while comparing below 2 list items. can you please help me identify the bug.

pline = '( "State" "4" "time")
    i=length(pline)
    item3 = nth(i-1 pline)
    item2 = nth(i-2 pline)
    item1 = nth(i-3 pline)

line = '("4" "Done")
     len_line=length(line)
     item5=nth(len_line-1 line)
     item4=nth(len_line-2 line)

if( (item2 == item4); compare fails and executes else part but if condition should pass as item2 & item4 has "4"!
    then
    lista = list(item1 item2 item3 item4 item5)

else

   item5 = "UNKNOWN"
   lista = list(item1 item2 item3 item4 item5)
 );end if 

printf("List is %L\n" lista)