[TYPO3-english] cObjGetSingle don't work as expected and only once

[Victor Livakovsky]

Hi, list.

I'm developing an extension and I've found, that cObjGetSingle method works 
really strange.
I'm using it in usual way:
1) calling $this->cObj->start to make my data row as current content and 
make possible to use 'field' in TS
2) creating object via $this->cObj->cObjGetSingle($this->conf[$view . 
'.'][$key], $this->conf[$view . '.'][$key . '.']);

First strange thing:
plugin.tx_myext_pi1.list {
  crdate = TEXT
  crdate.field = crdate
}
^ this makes no cObject

plugin.tx_myext_pi1.list {
  crdate = TEXT
  crdate.field = crdate
  crdate.wrap = <b>|</b>
}
^ this makes
But in second case cObject is filled only once. If I call 
$this->cObj->cObjGetSingle($this->conf[$view . '.'][$key], $this->conf[$view 
. '.'][$key . '.']); second time, I'll get only '<b></b>' in output.

Is it a bug or I'm using it in wrong way?

Thank you in advance.

TYPO3 4.4.4
PHP 5.3.2