Error: is an invalid xml tag. Names must begin with a letter, colon, or underscore, subsequent characters can include numbers, dashes, and periods

Screenshot_20190520-154801 Screenshot_20190520-154809 Screenshot_20190520-154755

its like issues never get over. now that i created calculation outside of the repeat loop functions, when I use the app, just at the last screen when its supposed to show me calculations, it shows me this. I am literally giving up :slight_smile: !!