Hiding a Section based on Multi Select List Box selected value and Promoting it to a List

(1) Promoting
Create a Hidden field and calculate its value using the formula below and promote
eval(eval(MultiSelectField[. != ""], 'concat(., ", ")'), "..")

(2) Hiding section based on MSLB value
 when you set up the condition, select "Select a field or group..." from the left dropdown, select the MSLB's field, and before confirming the Select a Field or Group dialog, pick All occurrences of ___ from the dropdown(one more below).