help with creating virtual dimmer scene (by time)

Good afternoon,

I use many devices Home Easy which are very cheap and work well with rfxtrx433.

The problem I have is with the triggers of blinds (also with dimmable lights)

The “Home easy” devices eg for blinds, with the first “ON” to shoot the opening and the second “ON” stops opening. (the same with OFF for close)

I created 2 devices in vera (for the same blind), the first is an on/off switch and the second is a regulator (%) for the open/close.
The first working properly completely open or close.
The second not work the % with “Home easy”, just hit the open / close function.
Is it possible to create a scene when I run on the dimmer swith to open the blind to x% first check actual % and send a first ON and then send one second ON after x seconds, where x is the time equivalent to% open / closing?

example:
If the blind goes up 10% in 5 seconds:

Now I have the blinds to 50%, if I tell the dimmer up to 60%, the scene verifies initial = 50% then 60% -50% = +10%, send “ON” immediately and a second “ON” after 5 seconds (time equal to 10%).

The same routine OFF + second OFF (closing)

My English is very basic, and help with google, I hope you understand enough …; D

thanks for your help