Unable to do Press and Release in following sequence.

[nsisodiya]

I want to mimic Alt+ Tab behaviour. This is like this..

-> Hold Key - LEFT ALT
-> delay 1000
-> Press and Release Key - TAB
-> delay 1000
-> Press and Release Key - TAB
-> delay 1000
-> Press and Release Key - TAB
-> delay 1000
-> Press and Release Key - TAB
-> Release Key - LEFT ALT

I am unable to do it, because when I use sendStroke for pressing TAB, it release LEFT ALT key too..
In other words, How can we release multiple keys and send instruction to release particular keys ?

Help me, also, give me idea, what coding i need it for this behaviour ?

[nsisodiya]

view - digistump/DigistumpArduino#48