Hey @finedesignz 
When you say "it doesn't display the current selected value or array" do you click the value in the dropdown and the cell stays empty?
Here is a link to our docs on Data Conversion: https://docs.retool.com/docs/javascript-in-retool#data-conversion-1
In my example below I used formatDataAsObject to convert the data to an object of table column arrays:
Does this work for your use case?
