there is a bug in this component. when you place the 'is24hFormat' attribute to FALSE, the format changes from time to text. This causes validations of the input widget to be as time as invalid. Another mistake is that it should appear 00:00, 00:30, 00: NN ... and it appears 12:00am, 12:30am, 12:nn...

Would be good to post this feedback to the discussion/support forum specific to OutSystems UI Web:

https://www.outsystems.com/forge/component-discussions/4143/OutSystems+UI+Web

Might get better attention there.