Scene to switch differences in humidity ?

[PBe 0]

I have an HC3 that is equipped with two air humidity sensors (Eurotronic 700088 air quality sensor Z-Wave Plus.

One sensor is in the protected outdoor area (ID 70), the other in a room (ID 60).

I need a script that should be run every three hours and if the humidity outside is higher than the humidity inside, a fan (via a relay switch - ID 55) should be switched on.

Can someone help me with this or does someone possibly have such a script for me?

[Alexander_H 0]

 I'm also a newbie. I also ran into this problem. I need to start ventilation when the temperature outside is below the temperature inside, plus, the humidity outside is lower than the humidity inside.
 Like have understood, the catch is that the comparison of sensor readings is possible not in the block of conditions for launching the script, but in the block of actions. Here's my example, if you understand that:

 

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[PBe 0]

Thanks!!

I will forward your tip to my stepson. I posted here for him