Hello Arjan,
First of all thank you for reaching out and using our products

We confirm that this is possible. Kiosc addresses an element by its **OSC Tag**, not by the visible label. In KioscEditor, select the Indicator and set a tag under its Behaviour settings, for example:
/status/indicator1
Then send to that exact URI from the CueCore3. The value must be an OSC **Colour** argument, not a String such as `#FF0000`. Also send an on-state, otherwise the Indicator may remain dimmed:
/status/indicator1 Colour: Red
/status/indicator1 Bool: On
You only need /kiosc/ in the address when it is actually part of the configured tag. Also check that the KioscTouch2 IP and OSC input port are correctly entered under **CueCore3 → Settings → OSC → Out IP**.
Hope this helps!