[karlos]

using

stock get_range(ida, idb)
    return entity_range(ida, idb)

should be

stock Float:get_range(ida, idb)
    return entity_range(ida, idb)

[karlos]

also it must be:

stock get_private_i(index, offset, linuxdiff=5)
    return get_pdata_int(index, offset, linuxdiff)

stock set_private_i(index, offset, value, linuxdiff=5)
{
    return set_pdata_int(index, offset, value, linuxdiff)
}

stock Float:get_private_f(index, offset, linuxdiff=5)
{
    return get_pdata_float(index, offset, linuxdiff)
}

stock Float:set_private_f(index, offset, Float:value, linuxdiff=5)
{
    return set_pdata_float(index, offset, value, linuxdiff)
}

[BAILOPAN]

Fixed