adding/removing columns dynamically to datatable

hi all,
here i can able to add columns to Data table from html table,but for dynamic columns i am not getting any functionalities like drag and drop ,sorting,remapping..etc...i already added colReorder.js file; if i have two columns col1,col2 remapping,sorting ,drag and drop is working;but not for dynamic columns col3,col4 etc..please guide me in this....