Limit number of form submissions by user with two value?

This code allow to limit the form submissions to users.
In this example I have a input box:
name=user_id

$form->data['user_id'] = &JFactory::getUser()->id;
$db_name =  $form->formXMLStruct['database']['name'];

$query = "select count(id) from $db_name where user_id={$form->data['user_id']}";
$database = &JFactory::getDBO();
$database->setQuery($query);
$res = $database->loadResult();
if ($res == null) die($query);
echo $res;
if ($res >= 10 && $form->submitter >= 0 ) $form->error = "Error!!!";//Ok, here the error message if susbmissions reach limit

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What I need is:
First, in the above code I need to put the error message and the counter message in a text box for each one? I do not know how to translate each one in a text box.
Second,
What happens if I have another value that is necessary to know how many form submissions the user should do.
For example:
I have a select box that is populated by javascript code, this select box it's called "paralelo_box" and has this values:
A
B
C
I need to do is, if  "A" value is selected, the number of form submissions per user change, the same for "B" and "C".
In this case:
A= 10 times
B= 9 Times
C= 11 Times
And Finally:
I would like to disable the submit button if the number of form submissions reaches the limit. The name of my submit button is "finalizar".
Thanks