Yes there is, the same way you copy it to any other variable.
There are numerous posts on that subject on JDEList. Mostly in the developers forum, there is also a download or two in the downloadsa forum that may help.
Thanks Peter,
But I've not found the solution ! I had a form with a grid. in the grid, I've two column, first column with item number and second grid column with TXKY alias. But with the media object structure or the media object function, I can't copy the media object to grid column.
How have you tried to do this? What event rules (including parameters where applicable) did you try and into which event and object were the rules entered?
Have you searched JDEList? What were your search criteria?