Clear Value of multi select not working

Hi,

I have a multiselect component that I try to clear when a buton is pressed.
The value seems to be cleared but the visual is not updated.
"multiselectInv" is my multiselect component.
As of right now it is populated by my query "filterinventorymultiple"
as you can see in the example TEST etienne is selected
image
When I submit, it trigers another query that uppon success it triggers "filterinventorymultiple" and clears all fields
image

But it doesn't update the multi select and shows the ID of the previous selection
image

It resets only if I reload the entire app...

Regards,