Most probably u have the wiring connections "terbalik" already.

Swap both incoming(line) life and neutral with the outgoing (load) life and neutral.

If u have no idea what im saying u better find a wireman to do it.

I'm not referring to swapping live and neutral.

I'm saying that the live and neutral from the supply side is connected wrongly in the switch.

Both the live and neutral from the supply side should be connected to the LINE side of the switch.

In your case, it might be connected in the LOAD side.

If u have no idea how to check that u should consult ur wireman and make sure u off the main supply power b4 attempting anything.