You can use Drive_Simple 

https://realvirtual.io/documentation/current/drivebehaviour.html#Drive-Simple

and connect this to the UI Button

https://realvirtual.io/documentation/current/uicomponents.html#UIButton

by using a Signal PLCInput

https://realvirtual.io/documentation/current/interface.html#Connecting-Signals

With Connect Signal you can connect the PLCInput (of the Button) to the PLCOutput (to control the Drive).

We are currently working on a totally new UI overlay system for easily controlling things in the 3D scene but it will still take some weeks until it is getting released.

Hi Bo, the Version of the TransportSurface, in combination with ParentDrives, in our Release 2021.07 had a Bug. We moved in current Release 2021.08 back to Version 2021.06 - with some minor enhancements. We are still not sure if your use case will fully work (Christin is testing tomorrow) but 2021.08 takes back a severe Bug of 2021.07. Sorry - we will tell you asap as we thing that all use cases are supported in combination with ParentDrives.

Hello,

we are currently working on a solution to solve both problems with the transport surface by making it more flexible and independent in terms of possible use cases. We use your scenario for testing.

Ah ok sorry - this is a know issue - we already described it here:

https://realvirtual.io/documentation/current/platforms.html

Current working coupler.exe is available in the download area:

https://realvirtual.io/download/PLCSimAdvancedCoupler.exe

A meeting today afternoon between 14:00 and 16:00 is also possible

The problem is, that this is somehow a timing issue. We can't reproduce it on our computers and I thought that it is fixed because it was fixed in a Teams meeting with another customer. So only solution is that we closely work together, I will need to check your logs on your computer and maybe add additional debug infos.

Can we meet via teams and check the issue. Tomorrow will be best for me. If needed I will add aditional debugs in the exe in the meeting so that we see what is happening. Can you send me also the log of the .exe file for checking.

If you have no success I will need to check with you on your computer tomorrow.

I have doupts, that you really used the .exe which I have send.

Please check the project directory and delete all the .exe (one is under StreamingAssets).