ZigBee2MQTT JSONPATH Transformation for Modkam DIYRuZ Sensor soil_moisture channel

Hello everyone. I bought myself this sensor and have some trouble adding the soil_moisture channel properly. I am using ZigBee2MQTT and managed to add the battery channel, but the moisture channel always gives me the wrong data.

Thing mqtt:topic:Modkam "Z2M: Modkam" (mqtt:broker:823098e4c9) {
    Type number : moisture "Bodenfeuchtigkeit" [stateTopic="zigbee2mqtt/Modkam", transformationPattern="JSONPATH:$.moisture", formatBeforePublish="%s%%"]
    Type number : battery "Akkustand" [stateTopic="zigbee2mqtt/Modkam", transformationPattern="JSONPATH:$.battery", formatBeforePublish="%s%%"]

I am sure the problem is the transformationPattern. I don’t know which one to use, to get the soil_moisture. I tried


Hopefully someone can help me.
MQTT.fx is giving me this information when the moisture sensor sends an update.
Screenshot 2023-03-14 160001

I don’t know why, but after renaming the sensor in my MQTT configuration.yaml every state got resettet and now the followng works: