With all my respect, I would disagree that GetWordnum() or alines() would be a solution to this problem.
@Jaime
You have JSON, use JSON parsing. Getwordnum() is dangerous. If you mean your JSON would always be like this, then you don't even need GetWordnum(), just hardcode the result. If you would try GetWordNum() anyway, then at least use the safer Strextract() - but it is JSON, go with JSON parsing.