Programmatically select value in a list box

2025 12 19
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I want to rearrange elements in a list box of a block mask in a
function moveDown(maskObj, controlName)
The rearrangement basically works as desired, however I am struggling with updating the selection after rearrangement.
When using
controlHandle = maskObj.getDialogControl(controlName);
selectedItems = controlHandle.getSelectedItems;
then rearranging the entries with
controlHandle.TypeOptions = rearrangedItems;
setting the same set of selected entries as before with
controlHandle.setSelectedItems = selectedItems;
fails with
% Error: Assignment not supported becuase the result of method
% 'setSelectedItems' is a temporary value
How can I update the selected items in the list box properly?
Thanks for your support.

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