If statement in JadeJS

I am having a little problem using Jade JS that doesn't let me finish my app. I have a Mongo DB with questions, answers, and comments. I want to display comments under each answer, so I use a FOR loop to compare the answer ID with the 'answer_id' of each comment.

So it would be like this:

for answer in answers
    br
    a #{answer.user}
    span #{answer.date.toLocaleDateString()} (#{answer.date.getHours()}:#{answer.date.getMinutes()})
    br
    pre #{answer.text}
    textarea(id='#{answer._id}',class='comm',placeholder='Comment this answer')
    span
        a.btn(href='javascript:post("#{answer._id}")') Send
    br
    br
        p asdadsdadas
    for comment in comments
        if comment
            if ('#{comment.answer_id}' == '#{answer._id}')
                p '#{answer._id}'
                p '#{comment.answer_id}'
    hr

The problem is that for Jade this is NOT equal, but if I change it to != to check the '#{answer._id}' and '#{comment.answer_id}' it shows me exactly the same... So I don't know what's going on.

Thanks