Change Item's SUB-name

Hello, Developers!
I'm trying to make in my plugin a potions with custom effect
When the players selects potion in inventory, the name of the item appears in the bottom of the screen for the shot period of time. If the item is the potion, then the effect description also will appear there on the second line.
I know how to change Item's name

Code:

$item->setCustomName($newItemName)

But is it possible to change/set Second line in that popup with the name?With the effect description
Like that one, on the atached image

Thanks in advance!

 

use \n to make a new line, in a string.

 

That just breaks the line, it doesn't answer his question

 

Didn't read it properly. sorry man!

 

This isn't really possible to change atm because that is handled by the item lore, which you can't change at this point in time.

 

Potion effect description !== item lore.

 

On PC, there's a 'HideFlag' tag which could've done it. MCPE might eventually get it soon. There's no way of removing it now.