how long does this last? One cycle? More? The tutiorial is unclear on this.
It actually depends on which memory location you are changing.
If it is one that is refreshed every cycle then it will only last till the next cycle.
Many sysvars do not do this. The eye cells for example. They only refresh when something is actually in the field of vision during that cycle. That is how some bots keep spinning indefinitely after seeing a conspec.
If you set one of these with a memory shot then it wil stay until it is cancelled by natural means.