Shelly cover duration and last_direction

I have several venetian blinds and in function of the movement, weather the blind is going up or down, its lads need to be oriented either a little bit down or up respectively, usually with different timings. So the orientation of the cover lads is not possible without knowing the “last_direction” of the cover and without beeing able to send a command to “go” “open/close” with “duration” argument.