Ok i'm having little trouble with reading pair.

So I'm creating my pair

private Pair<Integer, Integer> count(somethink) {
    int c1 = 2;
    int c2 = 4;
    return new Pair<Integer, Integer>(c1, c2);

}

And 'sending' it to ftl via java

mv.addObject("counted", count(somethink));

I won't write everythink how it sends because I dont think it really matters with my issue. So i'm recieving it in "ftl". Then i was trying to 'read' it

<#list counted?keys as key> 
    <a href="#offerOrderTab"><@spring.message "someMsg"/>(${key}/${counted[key]})</a>
</#list> 

After then i'm getting error

Expecting a string, date or number here, Expression x is instead a freemarker.ext.beans.SimpleMethodModel

As i suppose you dont iterate pairs (or I'm wrong?) i know its pair that contains only one key and one value but still i have to do send it that way and I thought its goin be to similar to iterating through map, in java i would use pair.first() and pair.second() but it doesn't work in ftl (ye i know it shouldnt work). I also tried to cast it to String by using ?string but it didnt work too