Is it possible to UNLOAD a model?

[eluser]autefrum[/eluser]
SOLVED!

Persistence pays off, and with the help of the others in this forum, here is how I fixed it.

I used variable references as suggested by Pygon, but not for the entire "$this->model", just for the model name:

Code:

for ($i = 1;$i<$number_of_mdels;$i++) {
$model_name = 'model_'.$i;
echo "model_name:$model_name<br>";
$this->load->model($model_name);
echo $this->$model_name->return_a_string()."<br>";
}

Note the
$this->$model_name (where $model_name=="model_1")
rather than
$this->model_1

I guess this is more of a php language query/solution than a codeIgniter query/solution but it had me stumped for a few weeks...