Index Contours Map Theme

I have 2 sets of contour layers, 1 every 20m, and another every 1m.

I've styled the 20m contours to create a heavier line weight for each 100m contour (so 100, 200, 300). All the other contours are a thinner weight. I did it using this post: https://support.avenza.com/hc/en-us/articles/360035256731-Advanced-Expression-Building-in-MAPublisher

Here is the formula I used for the 20m contour set:

Major Contours - REGEX( ELEVATION, "00$")

Minor Contours - REGEX( ELEVATION, "20|40$|60$|80$")

However, when I tried to use a similar expression for the one meter contours it styles all the contours the same. Here is the formula I used for the 1m contour set:

Major Contours (Every contour ending with 0 and 5) - REGEX(ELEV,"0$|5$")

Minor Contours (everything "else") - REGEX(ELEV, "1$|2$|3$|4$|6$|7$|8$|9$")

What am I doing wrong here?

*Note in the 20m file the field name is "ELEVATION", and in the 1m file the field name is "ELEV"

Perhaps more simply. Is there a simple expression for "else" in Mappublisher? It's automatically generated in QGIS, but I couldn't find anything that worked in Mappublisher.

Thanks,