Curtain Motor in a scene

1

Hello, the curtain motor can be opened or closed in percentage range. When I use it as an actor in a scene ( If… then Open 0%) I can’t save it. The value is automatically set to 50 percent. Minimum is 1 percent. If I then use the curtain as a trigger for another scene ( If Open then…) it doesn’t work, can you please make 0 percent possible? Thanks!