>>6935747>>6935764okay so its a bit of a setup. its easiest if you make a folder with the files you want to use and rename them. additionally its best if you have them all the same file type. next you want to make the background a formula. do this by checking the box for the "pick image" and hitting the calculator in the top right corner. then you want to make the formula the file location of your images (in my case its /storage/emulated/0/days/1.jpg ) then replace the number with an equation. i used $gv(e)$ to be able to illustrate it using a button but $df(e)$ returns a number between 1 and 7 corresponding with the day of the week.
thats basically it.