in blockly, I can use the sentence "set Device = On for 2 minutes".
This is working very well, but for example :
On timestamp 0 I trigger the lamp on for two minutes
On timestamp 60 seconds, I trigger again the lamp on for 2 minutes
On timestamp 120 seconds, the light is off

It would be nice, the light will go off at 180 seconds, because at timestamp 60 seconds I fired it again on for 120 seconds.
So I would request this functionalty for blockly

Thanks
elRedeo