Aylien extension : input attribute

Hi,

I just want to try a simple process to see if Aylien extension works well, so I just use two operators, Read Excel and Analyze Sentiment. I'm sure I set correct API key and API id, but in the parameter, I can't see any options like those I saw in tutorial, like "Text", "Language", etc. And when I manually type Text in this option and run this process, the operator Read Excel runs well, but Analyze Sentiment is a little weird, it doesn't seem to contain any error but it can't run. Can anyone help me to see what I did wrong in this process ?

Otherwise, I noticed that for Analyze Sentiment, input should be ExampleSet, so can we just import one single excel using Read Excel like this ? Or type something using Create Document ?

Thanks in advance.

LL