A XY Graph takes a cluster of two arrays (one for X, one for Y) as input. Here you input a cluster of two single values. More info here : https://flylib.com/books/en/3.352.1.111/1/
To solve your problem you could move your bundle function and graph outside the nested For Loop, thus creating an indexed array for both your values. Yet, you would see only the last 5 values.
Does it help ?
Just change that Build CLUSTER to a Build ARRAY.
As far as I know, inputting a single array to an XY Graph will not work. Do you have an example Minions ?
My bad there, I meant to add the Build array to the Build cluster output. This will only display a single element for each loop. If you move the XY Chart outside of the inner loop, then it will display the 5 elements every time the outer loop increments.