Hello.
I a trying to make a test using 
But my use seems not running properly and I can’t find why !!!
The fisrt one runs properly but not the two others even if they contains the word " VTT" they don’t ! :
This works for me:
Thank you for your answer.*I al doing test on my side and its works properly
So my mistake must be somewhere else … 
You don’t need the green logic blocks. contains piece will return true or false by itself