Fetch UOM when fetch item from warehouse in Stock Reconciliation

Hi,

when I make a stock reconciliation, I added a UOM custom filed to show in the Stock Reconciliation Item.
on the Fetch From I added item_code.stock_uom , However It doesn’t update when i press fetch from wherehouse.

is there is any custom script can fetch it ?

Use the following in fetch from

item.stock_uom

item.stock_uom is not working, However item_code.stock_uom is only working when i remove the item code and type it again on the stock reconciliation item record.

I need a way to update immediately UOM once I press Fetch from Warehouse button.