MQTT to device Device Capabilities not working

[Bulletcather]

At the moment I am working on making 1 device for my Nissan Leaf. Had this to date in different virtual devices and it works.
I downloaded and installed the Device Capabilities app here.
I have created several fields within a device that I want to fill from MQTT.
However, I cannot choose the values ​​of the MQTT in the Text field. I think thevariable is not seens as text but as number.

[OH2TH]

Why not use MQTT Hub’s MQTT device, and get the topics directly to device capabilies without a flow?

I used to do the flow trick you are trying, but then found MQTT device in MQTT Hub and made it so much simpler.

[Bulletcather]

I can not add a device with MQtt Hub.
If i choose for add MQTT Hub device there is no add button

[OH2TH]

Ah, that issue. The button is there, but hard to see

Same on the other pages. The next button is hard to see.

[Peter_Kawa]

A sensor and ‘nummerveld’ can’t handle string (text) variables, even if it only holds numbers;
You first have to convert the string variable to a numeric variable.
This works when the string variable holds numbers only

[Bulletcather]

Thanks for all the help.

It has already succeeded.