Hi
So, unfortunately you aren't showing the Expression you have in the variable.
Since to access the value, you need to use the Array access path from the Get Items above the variable initialize, where in the Loop, I have no doubt you are probably correctly accessing it because its easier, as its in the loop currentItem or Item() property, where you do not have that in the Variable.
Please share your expression.
You can use a compose, or a Filter Array etc, but its all based on how you sort for instance) in your Get Items, Using First, Last is your best bet as it will do what you want.
So essentially, you can do a First(body/value of your get items), or Last same thing, but again it depends on your sort. If you didn't sort them so its the last one, then you have to either do a Select (and only grab that column) then sort that.
Either of these will work