Add Variable attribute to Lookup Select Box field

[Shidhi]

I have been trying to add an additional column to the field selection but cannot do it.
Below is the code 

ref_qual_elements=technology;ref_ac_columns=sys_class_name;ref_ac_order_by=sys_class_name;is_searchable_choice=true

The backend name of the Class field is sys_class_name and below is the screenshot of the variable I need to get the Class besides the name.

Thank you!

[Sandeep Rajput · Accepted solution]

@Shidhi Please update the type specification of your variable as follows.

Here provide the comma separated list of columns which you would like to to show as label. 

Here is how the output looks.

Please mark the response helpful and accepted solution if it manages to answer your question.

[Shidhi]

Thank you @Sandeep Rajput