How work with Java StringTemplate boolean?

I wrote the following StringTemplate template lines:

<instance.attributes: { attr | <attr.value>}>
<instance.attributes: { attr | <if(attr.value)>skip<else>don't skip<endif> } >

in order to write skip if the Object value return by Instance.getAttributes().getValue() is a boolean which value is true.

This result in

1
skip

and

0
skip

(for now I only have one attribute)

What is the problem and why I don't get ?

0
don't skip
Answer:1

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