Variant VariantUtilityFunctions::max(const Variant **p_args, int p_argcount, Callable::CallError &r_error) {
    if (p_argcount < 1) {  // Changed from < 2
        r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
        r_error.expected = 1;  // Changed from 2
        return Variant();
    }
    
    // Validate first argument type
    Variant::Type first_type = p_args[0]->get_type();
    if (first_type != Variant::INT && first_type != Variant::FLOAT) {
        r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT;
        r_error.argument = 0;
        r_error.expected = Variant::FLOAT;
        return Variant();
    }
    
    // Handle single-argument case
    if (p_argcount == 1) {
        r_error.error = Callable::CallError::CALL_OK;
        return *p_args[0];
    }
    
    // ... rest of existing logic unchanged
}