Why is the name of the variables not displayed completely?

Question

bash

There are variables from which the name should be added

snap_date=$(date +%F)
dom="Ubuntu-node2"
snap_name="${dom}_${snapdate}_${snap_num}"

echo $snap_name

The output should be:

Ubuntu-node2_2022-04-14_s9

And in the end I get

Ubuntu-node2_

Answer 1

1. Snap_num variable not defined
2. snap_date != snapdate