Disable/hide report parameter on form AX 2012

There is an attribute makes this visibility control in Contrac class level.

This can be also achieve through visual studio parameters property of visibility.

[
DataMemberAttribute,
SysOperationControlVisibilityAttribute(false)
]
public AccountNum parmCustomerAccount(AccountNum  _accountNum = accountNum )
{
    accountNum = _accountNum;
    return accountNum;
}

Thanks,
Alfasith