Unable to store items into list index wise

Hey koders, I’m getting an error while I’m trying to store values into a list index wise. I’m using firebase where I have 3 banners Banner1, Banner2 And Banner3 and I want to display them in dynamic component number wise. I’m able to store them using ‘add items to list’ block but not able to display number wise (showing Banner1 at position 2, Banner2 at position1 and Banner3 at position 3). And I’m not able to store items index wise using ‘insert list item’ block, getting below error.

My Blocks

My Firebase