CSV Data Set Config substitution does not work

[lvincent-be]

When trying to change the message Content and mqtt-topic, on a per thread basis, using a CSV Data set does not result in substitution of the variables
For example, given the message:

Thread = ${__threadNum()} - var = ${HELLO} - cvs = ${ITEM}

the mutt sampler will correctly substitute the Thread number, the user variable 'HELLO', but not the CSV 'ITEM' variable .
Is variable substitution with CSV data sets supported by the component ?