Beginners question, trigger lights with Aqare illumination sensor

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Hi
I’m new on HA and would like to runs some more compley (for me more complex) automations.
For that I use an Aqare illumination sensor and I’d like to enable lights if illumination goes below 35 lx

However when I use the current illumination value as a trigger, I need to enter two values (above and below) but I only want to use the below value which isn’t possible. What do I miss? The upper value can’t be empty. I also looked at helpers to create a variable with the current illumination and run the automation every minute to check if it’s below 35 but I didn’t manage to automate that

Many thanks
Daniel

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You don’t need to enter both; it’s permissible to use either above or below. You are not obligated to use both.

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oh that was easy, many thanks!!!