I
strongly suggest you change the name of your CVARS.
Code:
maxTime = register_cvar("amx_maxtime","35",FCVAR_UNLOGGED);
minTime = register_cvar("amx_mintime","15",FCVAR_UNLOGGED);
anoun = register_cvar("amx_anouncec4","1",FCVAR_UNLOGGED);
Generally speaking, your CVARS should not be prefaced with "amx". They should be prefaced with the short name for your plugin. In your case, I guess that might be "rc4". You might also want to spell "announce" correctly unless you're misspelling it on purpose.
You should also store the original
mp_c4timer value and then restore it when your plugin ends. Let me know if I need to explain why.