Price changer Action Button

-- HikaShop version -- : 5.0.4
-- Joomla version -- : 5.1.0
-- PHP version -- : 8.1

Hi
i'm trying to create an action button which adds the stable amount of $10 to selected products

for example i select 3 products with prices of $10 , $20 and $30
when I click this button i want the prices to be changed to $20, $30, $40

i created a mass action with this code but it didnt work :
{price_value} = {price_value}+10

I did exactly what you said.
I get the error :
The table {price does not exist

I attached screenshots of my mass ation and the error

I removed { } and problem is solved now. thank you alot.
the correct operation was :
price.price_value+10 instead of {price.price_value}+10