=== Adding a formula to a XML cell (working with data in the same section) ===
# Navigate to your XML custom field.
# Click the '''Section Builder''' button in the action bar (section builder must be enabled).
# Click the desired '''Section'''.
# Click the desired '''Cell'''.
# In the Under '''Cell Properties''' enter your desired formula into the '''Content''' input.
# Click '''Build'''.
| =[row#,column#]*[row#,column#]
|}
=== Adding a formula to a XML cell (working with data in the different sections) ===