Good Day K5Optima!
In reviewing the code from the link you sent me, you do not show this rule in your "difference" field:
Add the following Rule to the difference field:
Action: Set a field's value
Field: .
Value: 0
with the following Condition on the Rule:
difference does not match pattern Custom Pattern: -{0,1}\d+
When I attempted to fill the Field in with "." it will not type or paste....you must pick a field....how do I get the "." to go into the field.
When actually filling in the dates on your example that you sent, I filled in from Aug. 1st to Aug. 5th and it calculated 4 days, but it should be 5. Any reason you left the "difference" field Rule out?