I'm trying to change the dataSource of a MultiSelect widget.
This is my MultiSelect (in my CustomEditor):
and i tried in the onOpen_Person function this code :
Now this shows just one item and it's undefined !!
I console.Logged the dataSource and i saw that the "Sid_personen" is undefined .. but in "_data" i found all the items i need .. but it doesn't show them ..
in the attached picture you can see the consoleLogged DataSource.
and this is my ActionMethod: