No, you are confusing regular cvar retrieval with pcvar retrieval.
Use this:
PHP Code:
new freezetime
freezetime = get_cvar_num("mp_freezetime")
OR:
PHP Code:
new freezetimepointer
// . . .
freezetimepointer = get_cvar_pointer("mp_freezetime")
// . . .
new freezetime
freezetime = get_pcvar_num(freezetimepointer)
The latter is more efficient.
String/Float:
PHP Code:
new mystring[32]
get_cvar_string("my_string_cvar", mystring, 31)
new Float:myfloat
myfloat = get_cvar_float("my_float_cvar")
Although, use pcvar instead (same analogous syntax as above).
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