name , client id in menu

[Ni3ls]

I was the only person on the server. The button has the name player_1, but the dvar has player_0. So it should work if there is only 1 person in the server. I tried it too with setting my name it and that worked fine as you said. But I dont have any error and the iprints dont show up. So i dont have any clue what to do :/

[Tally]

I was the only person on the server. The button has the name player_1, but the dvar has player_0. So it should work if there is only 1 person in the server. I tried it too with setting my name it and that worked fine as you said. But I dont have any error and the iprints dont show up. So i dont have any clue what to do :/

No, you are setting the dvar "player_" + their entity number. The itemDef{} you posted has a display for the dvar "player_1" - which wont show when the dvar set is "player_0".

If you have other itemDef{} to cover all possible scenarios, then the above wont explain why it wont show. So, I suggest you post the complete menu so we can check it again.