Unable to get property 'parent'

[Flavamints]

Hello guys! First sorry for my bad grammar

So, I just started programming for a couple of weeks, and interested on developing games with Phaser

But I got stuck with this problem

What I'm trying to make is a game where the player input several command then execute it to finish the level,

but oddly If I use 'take_id' then 'store_id' command I got this error saying "Unable to get property 'parent' of undefined or null reference"

[Flavamints]

Nevermind, I already found the solution, just create a new temp var to store the child of getItem.

But still, if there is more efficient way to do it, please let me know