Computed attributes ++i

Hello. Is it possible to accumulate data from the sensor and then display this value like normal true/false
I use a tektonika device. The sensor is connected to input 2 and during the trip sometimes I have incorrect data.

JEXL syntax supports this expression, but I can't integrate it.
for (let i = 0; i < size(list); ++i) { x = x + list[i]; }

Thanks for helping

What list are you planning to accumulate?

sorry for my late reply. I would like to use the operator «for» to check the signal about 5 sec at the input 2 and then accept it as true.
I need it because the signal at this input is not stable and sometimes lost during movement. Thanks

It's still unclear to me how you plan to get old data in the expression, even if you can do a loop.

is there any other way to do this?

You have to modify the source code