Dataframe: give name to column which is triggered by selection

[kohlerbiotech]

Hi,
it all works perfectly fine. The only thing I would like to achieve is having a name for the checkbox column. Currently the name of the column is empty.

The left column in the screen shot is my checkbox column. But there is no title for this column, like the next column called ‘ID’?

I used the code from Multiple links in one dataframe field - #9 by edsaac