Variable for length of RF transmission
Was wondering if it would be possible to have an optional variable to set the length of an RF transmission.  I assume somewhere in the back code, when a button is pushed it send out the RF signal for a set amount of time.  I have a remote that works by holding a physical button down which continues to send the signal until released.  If there was a way to set the push length I could mimic the remote. I think the window-covering is the closest accessory to what I am looking for but have not been able to replicate the way this remote works.

Example.
Hold "up" button for 5 seconds fully opens the shade structure.
Hold "up" button for 2.5 seconds would open the shade structure about 1/2
The "down" button works the same but in reverse.  Hold for 5 seconds fully closes, hold for 2.5 closes it back to half way.

I have played around with intervals and delays and can get it to open fully by having a very short delay, but operation is jerky. Close is even harder to replicate.

Any thoughts or possibility of a variable like this?