Formula for selecting an image using Timer Utilities > Random Image after 3.58 update

Hi! It looks like this update pushed to my device today. Storage migration went ok. A minor hang-up that required a manual move of my fonticon folder, but nothing I wasn't able to sort out. That said, I have searched this forum and the subreddit and can't seem to find anyone else with this issue...
I was using a global to select wallpaper at random. This gv is called wall1 and, pre-3.58, used the formula;$tu(rndimg, 5, "sdcard/Kustom/backgrounds")$
Then the background image was set using the formula "$gv(wall1)$
After getting this update, my background is black. When I opened the "wall1" gv I noticed that it was no longer selecting an image. Just an empty output field.
I figured this has to do with the removal of SD card access, so I went into my file manager and moved the folder to my main Kustom folder (as just designated by the migration). This new file path is /storage/emulated/0/Kustom/backgrounds
I copied the file path and then went to the gv and changed the formula to$tu(rndimg, 5, "/storage/emulated/0/Kustom/backgrounds")$
aaaaand...still a empty output field and blank background.
Did the formula for this function change? Is there something else I should be doing to make this work? Thanks for the amazing app and I look forward to getting this resolved.

Hey man, any luck with this? I'm trying to do the same, but it always get an empty output.

https://www.reddit.com/r/kustom/comments/r1sobl/kustom_358/i2k7ztq?context=3

Check the replies on this reddit comment I made. :)