i test it with sending only to debug from range function but it did not works.
Here is my export:
[{"id":"fd581bcc.7b37d8","type":"tab","label":"Flow 2","disabled":false,"info":""},{"id":"b5c3f899.9b04d8","type":"ttn uplink","z":"fd581bcc.7b37d8","name":"test ttn","app":"a102f25f.e46fc","dev_id":"","field":"","x":55,"y":373.3333215713501,"wires":[["3921324.07fcbce","26fed6dd.a324fa"]]},{"id":"26fed6dd.a324fa","type":"function","z":"fd581bcc.7b37d8","name":"Bodenfeuchtigkeit","func":"return {payload: {Bodenfeuchtigkeit: msg.payload.ADC_CH0V}};\n","outputs":1,"noerr":0,"x":331.8333435058594,"y":386.3333444595337,"wires":[["84e33c30.37d4b","98f7191b.8a4ca8"]],"outputLabels":["Bodenfeuchtigkeit"]},{"id":"84e33c30.37d4b","type":"range","z":"fd581bcc.7b37d8","minin":"0","maxin":"3","minout":"0","maxout":"100","action":"scale","round":false,"property":"payload","name":"","x":660.666690826416,"y":396.3334255218506,"wires":[["16f4a16a.bb40bf"]]},{"id":"16f4a16a.bb40bf","type":"debug","z":"fd581bcc.7b37d8","name":"bodenfeuchte 0-100 out","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":936.6667785644531,"y":394.9999704360962,"wires":[]},{"id":"3921324.07fcbce","type":"debug","z":"fd581bcc.7b37d8","name":"payload von ttn","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","x":337.6666946411133,"y":219.0000057220459,"wires":[]},{"id":"98f7191b.8a4ca8","type":"debug","z":"fd581bcc.7b37d8","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":525.1666870117188,"y":533.3333740234375,"wires":[]},{"id":"a102f25f.e46fc","type":"ttn app","z":"","appId":"dragino-lsn50-itboxtrier","accessKey":"ttn-account-v2.xxxxxxxxxxx","discovery":"discovery.thethingsnetwork.org:1900"}]
here the debug output:
28.5.2019, 18:00:35node: payload von ttn
msg.payload : Object
{ ADC_CH0V: 0.014, BatV: 3.33, Digital_IStatus: "L", Door_status: "OPEN", EXTI_Trigger: "FALSE" … }
28.5.2019, 18:00:35node: 98f7191b.8a4ca8
msg.payload : Object
{ Bodenfeuchtigkeit: 0.014 }