Curios Api Bug

I created a curios bauble item and assigned a custom number tag to the itemstack on the baubleEquipped trigger and then changed this custom number tag to another value on the baubleUnequipped trigger. 
The problem is that when I equip the bauble item back it doesn't detect the change I made to the custom number tag value on the baubleUnequipped trigger.

For example when I equipped the item to the curios slots I changed the value to 20 when I unequipped it I changed it to 18 but when I put it back on my curios slot and I print the value at the start of the equip trigger procedure the value was still 20 and not 18