Konfigure MQTT for rollershutter in PaperUI?

I use Sonoff-Tasmota from stefanbode with a Wemos D1 mini to control a shutter. Everything works fine via the web interface.

However, I have problems with the configuration in the PaperUI of OpenHab.

Via MQTT I would like to send on of the 3 commands:

cmnd/sonoff5/shutteropen
cmnd/sonoff5/shutterclose
cmnd/sonoff5/shutterstop

In my current config, however, only one of the three commands is sent:

cmnd/sonoff5/ 100
cmnd/sonoff5/ 0
cmnd/sonoff5/ 0

Where is my mistake?

How can I customize the mqtt topic for the 3 actions of opening, closing and pausing?

Please be aware that there is a difference between payload and topic.

These are topics with no payload:

cmnd/sonoff5/shutteropen
cmnd/sonoff5/shutterclose
cmnd/sonoff5/shutterstop

These are topics with payload 100 or 0

cmnd/sonoff5/ 100
cmnd/sonoff5/ 0
cmnd/sonoff5/ 0

As you want to send different topics, you will have to use different channels.
Another thing is, afaik there is still no direct way to send a topic with no payload.

Furthermore, control channels should not be retained.