[xRadical3]

Store coords as string and try.
See this example:

pawn Code:

INI_Write(AD_FILE, "CP_XYZ", "1267.2631,-1265.8411,13.3806");

//get coords from string with sscanf
new dest[64], Float:x, Float:y, Float:z;
INI_Get(AD_FILE, "CP_XYZ", dest);
sscanf(dest, "p<,>fff", x, y, z);