SLA Conditions not working

Summary:

In the SLA account rule, we have a sub-rule at priority 2. The requirement is that if the Expenditure Type is either TESTING1 or TESTING2, it should bypass sub-rule priority 2 and proceed directly to sub-rule priority 3. We attempted the conditions below, but they did not work as expected. Could you please provide suggestions?

Content (please ensure you mask any confidential information):

CONDITIONS:
( "Expenditure Type" != TESTING1 'Or' "Expenditure Type" != TESTING2 )

Version (include the version you are using, if applicable):

25C

Code Snippet (add any code snippets that support your topic, if applicable):