The LOGO! VM memory is not retentive.
In the event of a power failure, the memory loses all values.

Therefore, do not write to a NAI, but rather write to a parameter of an analog MUX or a mathematical instruction. The values written directly into the parameters of these blocks are stored in flash memory and are therefore protected against power failures.

And what simulations mode mean you? LSC in simulation? That didn't work, only in a real LOGO!.

Please note:

Simulation is simulation, real LOGO! is real LOGO!.
Not all, that work with real LOGO!, work in simulation mode of LSC.