[TYPO3-english] Condition mapping values

[Nesto]

Hi. This is my TS code:

  catUID = TEXT
  catUID.value = {register:newsCategoryUid}
  catUID.insertData = 1

So, i'm getting news category UID and storing it in catUID var. Now, what i 
want to do is this:

if ($catUID = 1) $PID = 20;
if ($catUID = 2) $PID = 24;
if ($catUID = 3) $PID = 26;
...... etc....

Basicly i need to map those catUIDs to PIDs. Is this possible to do?

Thank you for help!