Which key for the Funk-ZV at the Master / Movano?

Hello forum, With my ’99 Movano / Master the only key with ZV key has been lost. Now I would need replacement, and if possible not from the Opel dealer for 150€… I have already ordered from ebay a cheap “Chinese key”, which however could not be learned with the method “ZV key hold down “. Later I read then that over the years different technologies were installed in the ZVs, so that not automatically every Renault key, the externally looks like the original, also contains the matching chips. Who can tell me which key I need, or where there is it, best incl. ZV learning? (The original looked like the one on the picture in the attachment, but without LED, if I remember correctly…) many thanks in advance Tom